https://www.devex.com/people/can-i-transfer-my-jetblue-ticket-to-another-passenger-here-s-the-truth-2488916
https://myagileplm.com/question/%ca%8el%ca%87%c9%94%c7%9d%c9%b9i%e1%97%a1-can-i-cancel-and-get-a-refund-with-british-airways/
https://www.tripadvisor.com/ShowTopic-g1-i10702-k15124724-How_Do_I_Talk_to_a_Live_Person_at_Expedia_By_Phone_guide-Air_Travel.html
https://www.tripadvisor.com/ShowTopic-g1-i10702-k15124717-How_Do_I_Speak_To_Someone_At_Expedia_A_Comprehensive_Guide-Air_Travel.html
