Nguyen Thi Phuong Thao, President and CEO of Vietnamese airline carrier Vietjet, speaks during press conference in Dubai on November 10, 2015. Vietjet signed a deal with Airbus at the Dubai Airshow on Tuesday to buy 30 single-aisle A321 planes worth a total of $3.6 billion. AFP PHOTO / MARWAN NAAMANI (Photo credit should read MARWAN NAAMANI/AFP/Getty Images)
