https://www.tripadvisor.com/ShowTopic-g1-i10702-k15066557-Need_Help_with_Booking_com_Here_s_How_to_Contact_Customer_C-Air_Travel.html

https://www.devex.com/people/guide-how-to-change-the-date-on-allegiant-business-class-flight-ticket-2455432

https://www.devex.com/people/gratuito-de-avianca-como-llamar-a-avianca-en-estados-unidos-2455569

https://www.devex.com/people/is-expedia-really-free-cancellation-get-information-2455120

https://www.devex.com/people/what-aa_travel-is-the-american-cancellation-fee-2454918

https://www.devex.com/people/etihad-airlines-how-to-add-a-lap-infant-to-a-first-class-reservation-2455471

https://www.giantbomb.com/forums/general-discussion-30/askunitedhow-do-i-ask-a-question-on-united-airline-1927018/

https://www.tripadvisor.com/ShowTopic-g1-i10702-k15066547-How_to_Reach_Booking_com_for_Customer_care_Help_best_Care_l-Air_Travel.html

Does American offer fully refundable tickets

https://www.devex.com/people/a-step-by-step-guide-how-do-i-connect-with-someone-on-qatar-airways-2454968