A stewardess poses with a safety card inside the first Air France airliner's Airbus A220 during a press visit in the Air France hangar at Paris Charles de Gaulle airport in Roissy near Paris, France, September 29, 2021. REUTERS/Gonzalo Fuentes 

A cardboard cutout of a Japan Airlines stewardess wearing a protective face mask is seen in a Terminal at Paris Charles de Gaulle airport in Roissy near Paris as France closed borders to travellers outside European Union due to restrictions against the spread of the coronavirus disease (COVID-19) in France, February 5, 2021. REUTERS/Gonzalo Fuentes 

A cardboard cutout of a Japan Airlines stewardess wearing a protective face mask is seen in a Terminal at Paris Charles de Gaulle airport in Roissy near Paris as France closed borders to travellers outside European Union due to restrictions against the spread of the coronavirus disease (COVID-19) in France, February 5, 2021. REUTERS/Gonzalo Fuentes 

Singapore Airlines stewardesses pose for photos with guests at the boarding gate of their A380 restaurant at Changi Airport in Singapore October 24, 2020. REUTERS/Edgar Su 

Singapore Airlines stewardesses board their A380 restaurant at Changi Airport in Singapore October 24, 2020. REUTERS/Edgar Su 

Singapore Airlines stewardesses board their A380 restaurant at Changi Airport in Singapore October 24, 2020. REUTERS/Edgar Su 

Singapore Airlines stewardesses pose for photos before boarding their A380 restaurant at Changi Airport in Singapore October 24, 2020. REUTERS/Edgar Su 

Singapore Airlines stewardesses serve food on board the economy class cabin of their A380 restaurant at Changi Airport in Singapore October 24, 2020. REUTERS/Edgar Su 

A Singapore Airlines stewardess serves food in the business class cabin of their A380 restaurant at Changi Airport in Singapore October 24, 2020. REUTERS/Edgar Su 

A Singapore Airlines stewardess serves food in the business class cabin of their A380 restaurant at Changi Airport in Singapore October 24, 2020. REUTERS/Edgar Su 

A stewardess of Ukraine's Windrose Airlines wearing a protective face mask poses for a picture in front of an ATR 72-600 passenger plane flying to Odesa and operating its first flight at the Boryspil International Airport outside Kyiv, Ukraine June 27, 2020. REUTERS/Valentyn Ogirenko 

A stewardess of Ukraine's Windrose Airlines adjusts protective glasses prior to the departure for Odesa inside an ATR 72-600 passenger plane operating its first flight at the Boryspil International Airport outside Kyiv, Ukraine June 27, 2020. REUTERS/Valentyn Ogirenko 

A stewardess of Ukraine's Windrose Airlines wearing personal protective equipment checks luggage shelves prior to the departure for Odesa inside an ATR 72-600 passenger plane operating its first flight at the Boryspil International Airport outside Kyiv, Ukraine June 27, 2020. REUTERS/Valentyn Ogirenko 

A stewardess wearing protective gear takes the body temperature of a woman at the entrance of a plane at the Boryspil International Airport outside Kiev, Ukraine June 13, 2020. The airport prepares to resume regular international and domestic flights as Ukraine eases restrictions aimed to contain the spread of the coronavirus disease (COVID-19). REUTERS/Gleb Garanich 

Stewardesses wearing protective gear stand at the entrance of a plane at the Boryspil International Airport outside Kiev, Ukraine June 13, 2020. The airport prepares to resume regular international and domestic flights as Ukraine eases restrictions aimed to contain the spread of the coronavirus disease (COVID-19). REUTERS/Gleb Garanich 

A stewardess wearing protective gear walks inside a plane at the Boryspil International Airport outside Kiev, Ukraine June 13, 2020. The airport prepares to resume regular international and domestic flights as Ukraine eases restrictions aimed to contain the spread of the coronavirus disease (COVID-19). REUTERS/Gleb Garanich 

An Aegean Airlines stewardess wearing personal protective equipment (PPE) is seen on a flight transferring refugees and migrants from overcrowded migrant camps to Britain, where they will reunite with their families, amid the global outbreak of the coronavirus disease (COVID-19), at Athens International Airport, Greece, May 11, 2020. REUTERS/Alkis Konstantinidis 

An Aegean Airlines stewardess wearing personal protective equipment (PPE) is seen on a flight transferring refugees and migrants from overcrowded migrant camps to Britain, where they will reunite with their families, amid the global outbreak of the coronavirus disease (COVID-19), at Athens International Airport, Greece, May 11, 2020. REUTERS/Alkis Konstantinidis 

Aegean Airlines stewardesses wearing personal protective equipment (PPE) are seen on a flight transferring refugees and migrants from overcrowded migrant camps to Britain, where they will reunite with their families, amid the global outbreak of the coronavirus disease (COVID-19), at Athens International Airport, Greece, May 11, 2020. REUTERS/Alkis Konstantinidis 

Aeroflot stewardess attends a media presentation of the airline's first Airbus A350-900 aircraft at Sheremetyevo International Airport outside Moscow, Russia March 4, 2020. REUTERS/Maxim Shemetov 

Stewardesses and journalists board the first Airbus A350-900 aircraft of Russia's flagship airline Aeroflot during a media presentation at Sheremetyevo International Airport outside Moscow, Russia March 4, 2020. REUTERS/Maxim Shemetov 

Stewardesses walk near an Arkia Israeli Airlines Embraer ERJ-195AR plane at Ramon International Airport after an inauguration ceremony for the new airport, just outside the southern Red Sea resort city of Eilat, Israel January 21, 2019. REUTERS/Ronen Zvulun 

A stewardess is seen inside of Embraer 195 plane during presentation of Airline Belavia and Wargaming, the developer and publisher of the World of Tanks, joint project "Tankolet", at the National Airport Minsk, Belarus December 12, 2018. REUTERS/Vasily Fedosenko 

Stewardesses are seen inside of Embraer 195 plane during presentation of Airline Belavia and Wargaming, the developer and publisher of the World of Tanks, joint project "Tankolet", at the National Airport Minsk, Belarus December 12, 2018. REUTERS/Vasily Fedosenko 

A stewardess is seen inside of Embraer 195 plane during presentation of Airline Belavia and Wargaming, the developer and publisher of the World of Tanks, joint project "Tankolet", at the National Airport Minsk, Belarus December 12, 2018. REUTERS/Vasily Fedosenko 

Turkish Airlines stewardesses walk at a terminal of the Istanbul's new airport prior to the official opening ceremony, in Istanbul, Turkey, October 29, 2018. REUTERS/Murad Sezer 

A Turkish Airlines stewardess poses at a terminal of the Istanbul's new airport prior to the official opening ceremony, in Istanbul, Turkey, October 29, 2018. REUTERS/Murad Sezer 

Turkish Airlines Stewardesses pose at a terminal of the Istanbul's new airport prior to the official opening ceremony, in Istanbul, Turkey, October 29, 2018. REUTERS/Murad Sezer 

Stewardesses of Eurowings, a low-cost airline and fully owned subsidiary of German Lufthansa Group, salute as Eurowings opens a new route from Duesseldorf to New York, in Duesseldorf, Germany, April 27, 2018. REUTERS/Wolfgang Rattay 

An Eurowings stewardess poses with a food tray during a media day in an Airbus A340-300 with a business class section, as Eurowings opens a new route from Duesseldorf to New York, in Duesseldorf, Germany, April 27, 2018. REUTERS/Wolfgang Rattay 

A stewardess of Eurowings, a low-cost airline and fully owned subsidiary of German Lufthansa Group, poses inside an Airbus A340-300 with a business class section, as Eurowings opens a new route from Duesseldorf to New York, in Duesseldorf, Germany, April 27, 2018. REUTERS/Wolfgang Rattay 

A stewardess of Eurowings, a low-cost airline and fully owned subsidiary of German Lufthansa Group, poses inside an Airbus A340-300 with a business class section, as Eurowings opens a new route from Duesseldorf to New York, in Duesseldorf, Germany, April 27, 2018. REUTERS/Wolfgang Rattay 

A stewardess of Eurowings, a low-cost airline and fully owned subsidiary of German Lufthansa Group, poses in front of an Airbus A340-300 with a business class section, as Eurowings opens a new route from Duesseldorf to New York, in Duesseldorf, Germany, April 27, 2018. REUTERS/Wolfgang Rattay 

Eurowings' stewardess poses with a food tray inside an Airbus A340-300 with a business class section, as Eurowings opens a new route from Duesseldorf to New York, in Duesseldorf, Germany, April 27, 2018. REUTERS/Wolfgang Rattay 

A stewardess of Emirates Airlines, stands in the first class during a presentation of Emirates' Boeing 777 at the airport in Hamburg, April 11, 2018. REUTERS/Fabian Bimmer 

Singapore Airline stewardesses leave the airline's Boeing 787-10 Dreamliner after showcasing the plane's interior at the Boeing South Carolina plant in North Charleston, South Carolina, U.S., March 26, 2018. Picture taken March 26, 2018. REUTERS/Randall Hill 

Singapore Airlines stewardesses Karie Choo (L) and Joslyn Hue pose for photos in the business class section of the 787-10 Dreamliner after a delivery ceremony at the Boeing South Carolina plant in North Charleston, South Carolina, U.S., March 26, 2018. Picture taken March 26, 2018. REUTERS/Randall Hill 

Cheryl Ho, a stewardess with Singapore Airlines, stands in the business class area of the airline's Boeing 787-10 Dreamliner after a delivery ceremony at the Boeing South Carolina plant in North Charleston, South Carolina, U.S., March 26, 2018. Picture taken March 26, 2018. REUTERS/Randall Hill 

Stewardesses with Singapore Airlines stand in the business class section of the airline's Boeing 787-10 Dreamliner after a delivery ceremony at the Boeing South Carolina plant in North Charleston, South Carolina, U.S., March 26, 2018. Picture taken March 26, 2018. REUTERS/Randall Hill 

A stewardess with Singapore Airlines walks through the economy seating of the airline's Boeing 787-10 Dreamliner after a delivery ceremony at the Boeing South Carolina plant in North Charleston, South Carolina, U.S., March 26, 2018. Picture taken March 26, 2018. REUTERS/Randall Hill 

A stewardess with Singapore Airlines talks with media during a presentation of the interior of the airline's Boeing 787-10 Dreamliner after a delivery ceremony at the Boeing South Carolina plant in North Charleston, South Carolina, U.S., March 26, 2018. Picture taken March 26, 2018. REUTERS/Randall Hill 

A Singapore Airlines stewardess poses for photos in the newly-launched suites cabin of their A380 at Changi Airport in Singapore December 14, 2017. REUTERS/Edgar Su 

A Singapore Airlines stewardess poses for photos during a tour of the newly launched business class cabin on their A380 aircraft at Changi Airport in Singapore December 14, 2017. REUTERS/Edgar Su 

A Singapore Airlines air stewardess poses for photos during a tour of the newly launched business class cabin on their A380 aircraft at Changi Airport in Singapore December 14, 2017. REUTERS/Edgar Su 

A Singapore Airlines stewardess folds up the leg rest of a seat in the newly-launched premium economy class cabin of their A380 aircraft at Changi Airport in Singapore December 14, 2017. REUTERS/Edgar Su 

A Singapore Airlines stewardess poses for photos during a tour of the newly launched business class cabin on their A380 aircraft at Changi Airport in Singapore December 14, 2017. REUTERS/Edgar Su 

An air stewardess presents the newly launched Economy Class cabin during a Singapore Airlines event in Singapore November 2, 2017. REUTERS/Edgar Su 

An air stewardess presents the newly launched Business Class cabin during a Singapore Airlines event in Singapore November 2, 2017. REUTERS/Edgar Su 

Director of the Dornier Aviation & Aerospace Museum David Dornier (L to R), former Lufthansa flight 181 co-pilot Juergen Vietor, former passenger Diana Muell and former stewardess Gabriele von Lutzau pose in front of the fuselage of a Lufthansa Boeing 737-200, also known as Landshut, transported aboard of a Russian Volga-Dnepr Airlines Antonov An-124 aircraft after its arrival at the airport in Friedrichshafen, Germany September 23, 2017. REUTERS/Arnd Wiegmann 

Director of the Dornier Aviation & Aerospace Museum David Dornier (L to R), former Lufthansa flight 181 co-pilot Juergen Vietor, former passenger Diana Muell and former stewardess Gabriele von Lutzau pose in front of the fuselage of a Lufthansa Boeing 737-200, also known as Landshut, transported aboard of a Russian Volga-Dnepr Airlines Antonov An-124 aircraft after its arrival at the airport in Friedrichshafen, Germany September 23, 2017. REUTERS/Arnd Wiegmann 

Former Lufthansa flight 181 co-pilot Juergen Vietor, former passenger Diana Muell and former stewardess Gabriele von Lutzau (L -R) pose in front of the fuselage of a Lufthansa Boeing 737-200, also known as Landshut, transported aboard of a Russian Volga-Dnepr Airlines Antonov An-124 aircraft after its arrival at the airport in Friedrichshafen, Germany September 23, 2017. REUTERS/Arnd Wiegmann 

Former Lufthansa flight 181 co-pilot Juergen Vietor, former passenger Diana Muell and former stewardess Gabriele von Lutzau (R to L) pose in front of the fuselage of a Lufthansa Boeing 737-200, also known as Landshut, transported aboard of a Russian Volga-Dnepr Airlines Antonov An-124 aircraft after its arrival at the airport in Friedrichshafen, Germany September 23, 2017. REUTERS/Arnd Wiegmann 

Former Lufthansa flight 181 co-pilot Juergen Vietor, former passenger Diana Muell and former stewardess Gabriele von Lutzau pose in front of the nose of a Lufthansa Boeing 737-200, also known as Landshut, transported aboard of a Russian Volga-Dnepr Airlines Antonov An-124 aircraft after its arrival at the airport in Friedrichshafen, Germany September 23, 2017. REUTERS/Arnd Wiegmann 

Former Lufthansa flight 181 co-pilot Juergen Vietor, former stewardess Gabriele von Lutzau and former passenger Diana Muell (L to R) pose in front of the fuselage of a Lufthansa Boeing 737-200, also known as Landshut, transported aboard of a Russian Volga-Dnepr Airlines Antonov An-124 aircraft after its arrival at the airport in Friedrichshafen, Germany September 23, 2017. REUTERS/Arnd Wiegmann 

Rugby Union - Singapore Sevens - National Stadium, Singapore - 16/04/17 - A Canada's fan shows his support from the stands next to spectators dressed as Singapore Airlines flight stewardesses. REUTERS/Edgar Su 

Formula One - F1 - Singapore Grand Prix - Marina Bay, Singapore- 18/9/16 Singapore Airlines stewardesses wait for drivers during drivers parade ahead of the race. REUTERS/Edgar Su

A stewardess of Ukrainian International Airlines serves passengers during a flight from Kiev to Hurghada August 14, 2016. REUTERS/Gleb Garanich 

Fred Cromer (L), President of Bombardier Commercial Aircraft and Lufthansa unit Swiss International Air Lines Chief Executive Thomas Kluehr (2nd L) listen to a stewardess aboard the airlines new Bombardier CS100 aircraft during a flight over the Swiss Alps, Switzerland July 6, 2016. REUTERS/Arnd Wiegmann

Passengers listen as a Philippine Airlines flight stewardess demonstrates safety measures to passengers before taking off at Marinduque airport in Gasan town , March 27, 2016. REUTERS/Erik De Castro 

A Philippine Airlines flight stewardess demonstrates how to use a life jacket to passengers, before taking off at Marinduque airport in Gasan town, March 27, 2016. REUTERS/Erik De Castro