https://www.devex.com/people/airline-policy-is-american-airlines-allowing-flight-cancellations-2413610

https://www.devex.com/people/faqs-distruction-what-is-the-expedia-cancellation-policy-o-t-a-2413576

https://www.devex.com/people/usa-a-a-2413502

Delta Airlines Missed Flight Policy

https://tinyurl.com/568c5hu9

https://www.devex.com/people/hand-to-hand-service-is-there-a-grace-period-for-cancellation-2413614

https://www.devex.com/people/faqs-idea-how-do-i-request-an-expedia-refund-2413589

https://www.devex.com/people/s-s-s-2413492

https://www.devex.com/people/name-change-on-delta-airlines-ticket-without-hassle-2413605

https://www.tripadvisor.com/ShowTopic-g1-i10702-k15052897-How_to_Connect_How_to_Reach_Air_Canada_Care_Center_by_Phone-Air_Travel.html