United Airlines passengers fearful of boarding a Boeing 737 Max will be able to rebook flights for free once United starts flying the planes again.
원문출처 : https://www.cnn.com/2019/09/04/business/united-airlines-737-max-passengers/index.html
원문출처 : https://www.cnn.com/2019/09/04/business/united-airlines-737-max-passengers/index.html