U.S. President Donald Trump helps first lady Melania Trump with her seat while attending a SpaceX mission briefing at the Kennedy Space Center in Cape Canaveral, Florida, U.S., May 27, 2020. REUTERS/Jonathan Ernst

Markers to keep social distancing are placed on the floor and the seats inside the almost empty SM Mall of Asia, amid the coronavirus disease (COVID-19) outbreak, in Pasay City, Metro Manila, Philippines, May 27, 2020. REUTERS/Eloisa Lopez

German Chancellor Angela Merkel, German Finance Minister and Vice-Chancellor Olaf Scholz and German Minister for Food and Agriculture Julia Kloeckner take their seats at the start of the weekly cabinet meeting at the weekly cabinet meeting at the Chancellery following the outbreak of the coronavirus disease (COVID-19) in Berlin, Germany, May 27, 2020. Tobias Schwarz/Pool via REUTERS

A Chinese delegate stands amid empty seats before the closing session of the Chinese People's Political Consultative Conference (CPPCC) at the Great Hall of the People in Beijing, China May 27, 2020. REUTERS/Thomas Peter/Pool

Soccer Football - Bundesliga - Borussia Dortmund v Bayern Munich - Signal Iduna Park, Dortmund, Germany - May 26, 2020 General view of the scoreboard and empty seats, as play resumes behind closed doors following the outbreak of the coronavirus disease (COVID-19) Federico Gambarini/Pool via REUTERS DFL regulations prohibit any use of photographs as image sequences and/or quasi-video

A woman puts a protective mask on a dog as she sits at an outdoor seating section of a restaurant at Ramblas, as some Spanish provinces are allowed to ease lockdown restrictions during phase one, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain, May 25, 2020. REUTERS/Nacho Doce


A waitress wearing a protective face mask carries beverages for clients at an outdoor seating section of a restaurant at Ramblas, as some Spanish provinces are allowed to ease lockdown restrictions during phase one, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain, May 25, 2020. REUTERS/Nacho Doce?

Waiters wearing protective face masks carry food for clients at an outdoor seating section of a restaurant at Ramblas, as some Spanish provinces are allowed to ease lockdown restrictions during phase one, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain, May 25, 2020. REUTERS/Nacho Doce?

Journalists, maintaining social distance in their seats, raise their hands to ask Japan's Prime Minister Shinzo Abe questions at a news conference on Japan's response to the coronavirus disease (COVID-19), in Tokyo, Japan May 25, 2020. REUTERS/Kim Kyung-Hoon/Pool

People wearing face masks sit at an outdoor seating section of a kiosk at Retiro Park as it is reopened for the first time in more than 2 months amid the coronavirus disease (COVID-19) outbreak, in Madrid, Spain May 25, 2020. REUTERS/Sergio Perez

People wearing face masks sit at an outdoor seating section of a kiosk at Retiro Park as it is reopened for the first time in more than 2 months amid the coronavirus disease (COVID-19) outbreak, in Madrid, Spain May 25, 2020. REUTERS/Sergio Perez

People wearing protective face masks walk past an outdoor seating section of a Zurich bar at Catalunya square, as some Spanish provinces are allowed to ease lockdown restrictions during phase one, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain, May 25, 2020. REUTERS/Nacho Doce?

A man wearing a protective face mask sits at a table at an outdoor seating section of a Zurich bar at Catalunya square, as some Spanish provinces are allowed to ease lockdown restrictions during phase one, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain, May 25, 2020. REUTERS/Nacho Doce


A man takes a selfie at an outdoor seating section of a Zurich bar at Catalunya square, as some Spanish provinces are allowed to ease lockdown restrictions during phase one, amid the coronavirus disease (COVID-19) outbreak, in Barcelona Spain, May 25, 2020. REUTERS/Nacho Doce


A waiter wearing a protective face mask serves a beverage for a client at an outdoor seating section of a restaurant that reopened for the first time in more than 2 months amid the coronavirus disease (COVID-19) outbreak, at Plaza Mayor Square in Madrid, Spain, May 25, 2020. REUTERS/Juan Medina

People sit at an outdoor seating section of a restaurant that reopened for the first time in more than 2 months amid the coronavirus disease (COVID-19) outbreak, at Plaza Mayor Square in Madrid, Spain, May 25, 2020. REUTERS/Juan Medina

People sit at an outdoor seating section of a restaurant that reopened for the first time in more than 2 months amid the coronavirus disease (COVID-19) outbreak, at Plaza Mayor Square in Madrid, Spain, May 25, 2020. REUTERS/Juan Medina

A robot that takes orders, makes coffee and brings the drinks straight to customers at their seats is seen at a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers at their seats is seen at a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers at their seats is seen at a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers at their seats is seen at a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers at their seats is seen at a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

Soccer Football - Bundesliga - SC Paderborn v TSG 1899 Hoffenheim - Benteler Arena, Paderborn, Germany - May 23, 2020 A TV cameraman in front of empty seats, as play resumes behind closed doors following the outbreak of the coronavirus disease (COVID-19) Friso Gentsch/Pool via REUTERS DFL regulations prohibit any use of photographs as image sequences and/or quasi-video

Soccer Football - Bundesliga - SC Paderborn v TSG 1899 Hoffenheim - Benteler Arena, Paderborn, Germany - May 23, 2020 Empty seats during the match, as play resumes behind closed doors following the outbreak of the coronavirus disease (COVID-19) Friso Gentsch/Pool via REUTERS DFL regulations prohibit any use of photographs as image sequences and/or quasi-video

Empty seats are seen in front of Sultanahmet Mosque amid the spread of the coronavirus disease (COVID-19), in Istanbul, Turkey, May 21, 2020. Picture taken May 21, 2020. REUTERS/Umit Bektas

A mural in the county seat of DeWitt County is seen in Cuero, Texas, U.S., May 18, 2020. Picture taken May 18, 2020. REUTERS/Jennifer Hiller

Chinese Foreign Minister Wang Yi wearing a face mask following the coronavirus disease (COVID-19) outbreak arrives to his seat for the opening session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China May 22, 2020. REUTERS/Carlos Garcia Rawlins

Chinese Premier Li Keqiang returns to his seat next to Chinese President Xi Jinping after his speech at the opening session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China May 22, 2020. REUTERS/Carlos Garcia Rawlins

Chinese Premier Li Keqiang returns to his seat next to Chinese President Xi Jinping after his speech at the opening session of the National People's Congress (NPC) at the Great Hall of the People in Beijing, China May 22, 2020. REUTERS/Carlos Garcia Rawlins

People eat dinner as pig balloons occupy the seats as part of social distancing measures to prevent the spread of the coronavirus disease (COVID-19), at the restaurant reopened after the easing of restrictions, in Bangkok, Thailand, May 21,2020. REUTERS/Athit Perawongmetha TPX IMAGES OF THE DAY

Police tape is seen on seats at a closed cafe as the coronavirus disease (COVID-19) continues, at New York’s JFK International Airport in New York, U.S., May 19, 2020. Picture taken May 19, 2020. REUTERS/Shannon Stapleton

Empty seats are pictured with GOL airlines aircrafts in the background in Santos Dumont airport during the coronavirus disease (COVID-19) outbreak in Rio de Janeiro, Brazil, May 20, 2020. REUTERS/Ricardo Moraes

An employee works in an office that has seats marked with a social distancing symbol as the city allowed some businesses to reopen on Wednesday following a fall in daily deaths due to the outbreak of the coronavirus disease (COVID-19), in Guayaquil, Ecuador May 20, 2020. REUTERS/Vicente Gaibor del Pino

A woman, clad in burqa, sits with her son in a waiting area with a social-distancing sign on a seat at a railway station as she returns to her hometown, after Pakistan started easing the lockdown restrictions and allowed to resume passenger trains, following the coronavirus disease (COVID-19) outbreak, in Peshawar, Pakistan May 20, 2020. REUTERS/Fayaz Aziz

An empty seat for reporters is seen at U.S. Senate Minority Leader Chuck Schumer's (D-NY) news conference on the response to the coronavirus disease (COVID-19) outbreak on Capitol Hill in Washington, U.S., May 19, 2020. REUTERS/Yuri Gripas

Empty seats are seen at the check-in hall at Guarulhos International Airport as air traffic is affected by the outbreak of the coronavirus disease (COVID-19), in Guarulhos, near Sao Paulo, Brazil, May 19, 2020.REUTERS/Amanda Perobelli

Empty seats and tables are seen in a restaurant after its reopening at 30% capacity, following the outbreak of the coronavirus disease (COVID-19), in Dubai, United Arab Emirates May 13, 2020. Picture taken May 13, 2020. REUTERS/Abdel Hadi Ramahi

General view of the empty seats of the hemicycle prior to the weekly session of questions to the government at the National Assembly in Paris, France, May 19, 2020. Christophe Petit/Pool via REUTERS

General view of the empty seats of the hemicycle prior to the weekly session of questions to the government at the National Assembly in Paris, France, May 19, 2020. Christophe Petit/Pool via REUTERS

General view of the empty seats of the hemicycle prior to the weekly session of questions to the government at the National Assembly in Paris, France, May 19, 2020. Christophe Petit/Pool via REUTERS

Historian Levi Tinker practices a movie introduction in front of empty seats at the TCL Chinese theatre which is closed during the outbreak of the coronavirus disease (COVID-19), in Los Angeles, California, U.S., May 18, 2020. REUTERS/Mario Anzuoni

Historian Levi Tinker practices a movie introduction in front of empty seats at the TCL Chinese theatre which is closed during the outbreak of the coronavirus disease (COVID-19), in Los Angeles, California, U.S., May 18, 2020. REUTERS/Mario Anzuoni

Historian Levi Tinker practices a movie introduction in front of empty seats at the TCL Chinese theatre which is closed during the outbreak of the coronavirus disease (COVID-19), in Los Angeles, California, U.S., May 18, 2020. REUTERS/Mario Anzuoni

Soccer Football - Bundesliga - Werder Bremen v Bayer Leverkusen - Weser-Stadion, Bremen, Germany - May 18, 2020 Empty seats are seen, as play resumes behind closed doors following the outbreak of the coronavirus disease (COVID-19) Stuart Franklin/Pool via REUTERS DFL regulations prohibit any use of photographs as image sequences and/or quasi-video

A man wearing a face mask sits on a bench surrounded by "Please do not use this seat" signs at London Victoria station, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 18, 2020. REUTERS/Toby Melville REFILE - CORRECTING LOCATION AND BYLINE

Employees eat lunch next to a sign which advises people to leave the next seat empty to prevent the spread of the novel coronavirus disease (COVID-19), at a canteen of Baidu's headquarters in Beijing, China May 18, 2020. REUTERS/Tingshu Wang

Employees wearing face masks hold their lunch as they look for seats at a canteen of Baidu's headquarters in Beijing, following the novel coronavirus disease (COVID-19) outbreak, China May 18, 2020. REUTERS/Tingshu Wang

An employee wearing a face mask prepares to have his lunch as the next seat of each table is out of use to prevent the spread of the novel coronavirus disease (COVID-19), at a canteen of Baidu's headquarters in Beijing, China May 18, 2020. REUTERS/Tingshu Wang

A "Caution" tape wraps around a row of seats at a shopping center, following the easing of restrictions implemented to curb the spread of the coronavirus disease (COVID-19), in Sydney, Australia, May 18, 2020. REUTERS/Loren Elliott

Dolls are placed at a social distancing seat at a bank in Icon Siam shopping center as shopping centers reopen nation wide during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand May 17, 2020. REUTERS/Soe Zeya Tun

A woman sits on social distancing seat at a bank in Icon Siam shopping center as shopping centers reopen nation wide during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand May 17, 2020. REUTERS/Soe Zeya Tun

Dolls are placed at a social distancing seat at a bank in Icon Siam shopping center as shopping centres reopen nation wide during the coronavirus disease (COVID-19) outbreak in Bangkok, Thailand May 17, 2020. REUTERS/Soe Zeya Tun

People have lunch while Barbegon, mascots of the "Bar.B.Q Plaza" restaurant occupy the seats as part of social distancing measures to prevent the spread of the coronavirus disease (COVID-19), at the restaurant reopened after the easing of restrictions, in Bangkok, Thailand, May 17, 2020. REUTERS/Athit Perawongmetha

Barbegon, mascots of the "Bar.B.Q Plaza" restaurant occupy the seats as part of social distancing measures to prevent the spread of the coronavirus disease (COVID-19), at the restaurant reopened after the easing of restrictions, in Bangkok, Thailand, May 17, 2020. REUTERS/Athit Perawongmetha

Barbegon, mascots of the "Bar.B.Q Plaza" restaurant occupy the seats as part of social distancing measures to prevent the spread of the coronavirus disease (COVID-19), at the restaurant reopened after the easing of restrictions, in Bangkok, Thailand, May 17, 2020. REUTERS/Athit Perawongmetha

Barbegon, mascots of the "Bar.B.Q Plaza" restaurant occupy the seats as part of social distancing measures to prevent the spread of the coronavirus disease (COVID-19), at the restaurant reopened after the easing of restrictions, in Bangkok, Thailand, May 17, 2020. REUTERS/Athit Perawongmetha

Barbegon, mascots of the "Bar.B.Q Plaza" restaurant occupy the seats as part of social distancing measures to prevent the spread of the coronavirus disease (COVID-19), at the restaurant reopened after the easing of restrictions, in Bangkok, Thailand, May 17, 2020. REUTERS/Athit Perawongmetha

Soccer Football - Bundesliga - Eintracht Frankfurt v Borussia Moenchengladbach - Commerzbank-Arena, Frankfurt, Germany - May 16, 2020 A man wearing a face mask walks past empty seats before the match, as play resumes behind closed doors following the outbreak of the coronavirus disease (COVID-19) Michael Probst/Pool via REUTERS DFL regulations prohibit any use of photographs as image sequences and/or quasi-video

Passengers seats removed from an Ethiopian Airline passenger carrier to be converted into a cargo plane are seen arranged at the Ethiopian Airlines hangar within Bole international airport in the Addis Ababa, Ethiopia May 15, 2020. Picture taken May 15, 2020. REUTERS/Giulia Paravicini

An Ethiopian Airlines passenger carrier is seen without seats as it is converted into a cargo plane at the Ethiopian Airlines hangar within Bole international airport in the Addis Ababa, Ethiopia May 15, 2020. Picture taken May 15, 2020. REUTERS/Giulia Paravicini