Nabil Sultan, Divisional Senior Vice President, Emirates SkyCargo speaks during at news conference at the International Humanitarian City in Dubai, United Arab Emirates, May 9, 2021. REUTERS/Abdel Hadi Ramahi

Medical supplies from World Health Organisation (WHO) are pictured as they are ready to be sent to India at the International Humanitarian City in Dubai, United Arab Emirates, May 9, 2021. REUTERS/Abdel Hadi Ramahi

Workers prepare the medical supplies to be sent to India at the International Humanitarian City in Dubai, United Arab Emirates, May 9, 2021. REUTERS/Abdel Hadi Ramahi

Medical supplies are pictured as they are ready to be sent to India at the International Humanitarian City in Dubai, United Arab Emirates, May 9, 2021. REUTERS/Abdel Hadi Ramahi

A forklift driver loads the medical supplies which will be sent to India at the International Humanitarian City in Dubai, United Arab Emirates, May 9, 2021. REUTERS/Abdel Hadi Ramahi

Medical supplies are pictured as they are ready to be sent to India at the International Humanitarian City in Dubai, United Arab Emirates, May 9, 2021. REUTERS/Abdel Hadi Ramahi

Travellers are seen in front of an airplane of Hainan Airlines at the Beijing Capital International Airport in Beijing, China May 9, 2021. REUTERS/Tingshu Wang

A United Airlines employee swabs his nose for a coronavirus disease (COVID-19) test to attend the CLEAR Connects: A Day of Families, a mass reunion event, at MetLife Stadium in East Rutherford, New Jersey, U.S., May 6, 2021. REUTERS/Brendan McDermid

An Airbus A320 passenger plane of FlyArystan airline descends against the backdrop of the Tien Shan mountains before landing at an airport in the city of Almaty, Kazakhstan May 4, 2021. REUTERS/Pavel Mikheyev

German air carrier Lufthansa's logo is seen near a terminal on the day of the airline's annual general meeting at the airport in Frankfurt, Germany, May 4, 2021. REUTERS/Kai Pfaffenbach

A passenger follows signs towards German air carrier Lufthansa's service center on the day of the airline's annual general meeting at the airport in Frankfurt, Germany, May 4, 2021. REUTERS/Kai Pfaffenbach

An emergency exit sign is seen next to closed counters of German air carrier Lufthansa on the day of the airline's annual general meeting at the airport in Frankfurt, Germany, May 4, 2021. REUTERS/Kai Pfaffenbach

Passengers follow signs towards German air carrier Lufthansa's service center on the day of the airline's annual general meeting at the airport in Frankfurt, Germany, May 4, 2021. REUTERS/Kai Pfaffenbach

A shut-down first class counter of German air carrier Lufthansa is photographed on the day of the airline's annual general meeting at the airport in Frankfurt, Germany, May 4, 2021. REUTERS/Kai Pfaffenbach

A shut-down first class counter of German air carrier Lufthansa is photographed on the day of the airline's annual general meeting at the airport in Frankfurt, Germany, May 4, 2021. REUTERS/Kai Pfaffenbach

A flag of German air carrier Lufthansa flutters in the wind on the day of the airline's annual general meeting at the airport in Frankfurt, Germany, May 4, 2021. REUTERS/Kai Pfaffenbach

A flag of German air carrier Lufthansa flutters in the wind on the day of the airline's annual general meeting at the airport in Frankfurt, Germany, May 4, 2021. REUTERS/Kai Pfaffenbach

Passengers come and go to a German air carrier Lufthansa's service center on the day of the airline's annual general meeting at the airport in Frankfurt, Germany, May 4, 2021. REUTERS/Kai Pfaffenbach

A passenger wears a PPE (personal protection equipment) suit as she walks through the terminal of German air carrier Lufthansa on the day of the airline's annual general meeting at the airport in Frankfurt, Germany, May 4, 2021. REUTERS/Kai Pfaffenbach

Planes of German air carrier Lufthansa are photographed at the day of the airline's annual general meeting at the airport in Frankfurt, Germany, May 4, 2021. REUTERS/Kai Pfaffenbach

An airplane of Air Do, a regional airline in cooperation with All Nippon Airways (ANA), is seen next to a Japan Airlines' plane at New Chitose Airport, in Sapporo, Hokkaido, Japan May 4, 2021. REUTERS/Issei Kato

Japan Airlines (JAL) planes sit on the tarmac at New Chitose Airport, in Sapporo, Hokkaido, Japan May 4, 2021. REUTERS/Issei Kato

A Vietnam Airlines plane takes off through a layer of smoke from hazard reduction burns, resulting in a poor air quality alert issued for parts of the city, in Sydney, Australia, May 3, 2021. REUTERS/Loren Elliott

A cyclist rides past a decommissioned British Airways Boeing 747 jumbo jet parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

A motorbike is ridden past a decommissioned British Airways Boeing 747 jumbo jet parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

A classic car is driven past a decommissioned British Airways Boeing 747 jumbo jet parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

A cyclist rides past a decommissioned British Airways Boeing 747 jumbo jet parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

An aerial view from a plane shows a New Safe Confinement (NSC) structure over the old sarcophagus covering the damaged fourth reactor at the Chernobyl Nuclear Power Plant during a tour to the Chernobyl exclusion zone, Ukraine April 3, 2021. Ukraine International Airlines made a special offer marking the 35th anniversary of the Chernobyl nuclear disaster. Tourists get a bird's eye view of abandoned buildings in the ghost town of Pripyat and the massive domed structure covering a reactor of the Chernobyl Nuclear Power Plant that exploded on April 26, 1986. Picture taken April 3, 2021. REUTERS/Gleb Garanich

Passengers are seen onboard a plane during a tour to the Chernobyl exclusion zone, Ukraine April 3, 2021. Ukraine International Airlines made a special offer marking the 35th anniversary of the Chernobyl nuclear disaster. Tourists get a bird's eye view of abandoned buildings in the ghost town of Pripyat and the massive domed structure covering a reactor of the Chernobyl Nuclear Power Plant that exploded on April 26, 1986. Picture taken April 3, 2021. REUTERS/Gleb Garanich

An aerial view from a plane shows a New Safe Confinement (NSC) structure over the old sarcophagus covering the damaged fourth reactor at the Chernobyl Nuclear Power Plant during a tour to the Chernobyl exclusion zone, Ukraine April 3, 2021. Ukraine International Airlines made a special offer marking the 35th anniversary of the Chernobyl nuclear disaster. Tourists get a bird's eye view of abandoned buildings in the ghost town of Pripyat and the massive domed structure covering a reactor of the Chernobyl Nuclear Power Plant that exploded on April 26, 1986. Picture taken April 3, 2021. REUTERS/Gleb Garanich

A pilot wearing a protective face mask addresses passengers onboard a plane during a tour to the Chernobyl exclusion zone, Ukraine April 3, 2021. Ukraine International Airlines made a special offer marking the 35th anniversary of the Chernobyl nuclear disaster. Tourists get a bird's eye view of abandoned buildings in the ghost town of Pripyat and the massive domed structure covering a reactor of the Chernobyl Nuclear Power Plant that exploded on April 26, 1986. Picture taken April 3, 2021. REUTERS/Gleb Garanich

Passengers wear protective face masks onboard a plane during a tour to the Chernobyl exclusion zone, Ukraine April 3, 2021. Ukraine International Airlines made a special offer marking the 35th anniversary of the Chernobyl nuclear disaster. Tourists get a bird's eye view of abandoned buildings in the ghost town of Pripyat and the massive domed structure covering a reactor of the Chernobyl Nuclear Power Plant that exploded on April 26, 1986. Picture taken April 3, 2021. REUTERS/Gleb Garanich

Passengers board a plane during a tour to the Chernobyl exclusion zone at the Boryspil International Airport outside Kyiv, Ukraine April 3, 2021. Ukraine International Airlines made a special offer marking the 35th anniversary of the Chernobyl nuclear disaster. Tourists get a bird's eye view of abandoned buildings in the ghost town of Pripyat and the massive domed structure covering a reactor of the Chernobyl Nuclear Power Plant that exploded on April 26, 1986. Picture taken April 3, 2021. REUTERS/Gleb Garanich

Passengers board a plane during a tour to the Chernobyl exclusion zone at the Boryspil International Airport outside Kyiv, Ukraine April 3, 2021. Ukraine International Airlines made a special offer marking the 35th anniversary of the Chernobyl nuclear disaster. Tourists get a bird's eye view of abandoned buildings in the ghost town of Pripyat and the massive domed structure covering a reactor of the Chernobyl Nuclear Power Plant that exploded on April 26, 1986. Picture taken April 3, 2021. REUTERS/Gleb Garanich

An aerial view from a plane shows the Chernobyl Nuclear Power Plant during a tour to the Chernobyl exclusion zone, Ukraine April 3, 2021. Ukraine International Airlines made a special offer marking the 35th anniversary of the Chernobyl nuclear disaster. Tourists get a bird's eye view of abandoned buildings in the ghost town of Pripyat and the massive domed structure covering a reactor of the Chernobyl Nuclear Power Plant that exploded on April 26, 1986. Picture taken April 3, 2021. REUTERS/Gleb Garanich

A man views decommissioned British Airways Boeing 747 jumbo jets parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

Decommissioned British Airways Boeing 747 jumbo jets are seen parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

Decommissioned British Airways Boeing 747 jumbo jets are seen parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

A man views decommissioned British Airways Boeing 747 jumbo jets parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

Decommissioned British Airways Boeing 747 jumbo jets with engines removed are seen parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

A helicopter flies near British Airways Boeing 747 jumbo jets parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

Decommissioned British Airways Boeing 747 jumbo jets, partially dismantled, are seen parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

Decommissioned British Airways Boeing 747 jumbo jets are seen parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

A decommissioned British Airways Boeing 747 jumbo jet with engine removed is seen parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

Decommissioned British Airways Boeing 747 jumbo jets are seen parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

Decommissioned British Airways Boeing 747 jumbo jets with engines removed are seen parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

A man views decommissioned British Airways Boeing 747 jumbo jets parked to be used for salvage and parts after the airline retired its whole 747 fleet, amongst the spread of the coronavirus disease (COVID-19) pandemic, Cotswold Airport, Kemble, Britain, April 23, 2021. REUTERS/Toby Melville

Alitalia workers hold a protest to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 16, 2021. REUTERS/Yara Nardi

A woman holds a protest to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 16, 2021. REUTERS/Yara Nardi

A woman holds a protest to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 16, 2021. REUTERS/Yara Nardi

A woman holds a protest to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 16, 2021. REUTERS/Yara Nardi

Alitalia workers hold a protest to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 16, 2021. REUTERS/Yara Nardi

Alitalia workers hold a protest to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 16, 2021. REUTERS/Yara Nardi

A woman holds a protest to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 16, 2021. REUTERS/Yara Nardi

A woman holds a protest to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 16, 2021. REUTERS/Yara Nardi

Alitalia workers hold a protest to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 16, 2021. REUTERS/Yara Nardi

A woman holds a sign during a protest of Alitalia workers to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 14, 2021. The sign reads "Don't touch Alitalia". REUTERS/Remo Casilli

A woman shows her painted hand in front of police officers during a protest of Alitalia workers to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 14, 2021. REUTERS/Remo Casilli

Alitalia workers show their painted hands in front of police officers during a protest to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 14, 2021. REUTERS/Remo Casilli

A woman holds a sign during a protest of Alitalia workers to urge Italy's government to abandon negotiations with the European Commission over the airline's revamp, in Rome, Italy, April 14, 2021. The sign reads "Keep the acorns, leave me the wings". REUTERS/Remo Casilli