Activity
- https://www.devex.com/people/ticket-canceled-does-british-airways-have-a-free-cancellation-policy-2311449
- https://www.devex.com/people/what-is-the-american-cancellation-fee-cancellation-experts-agents-2311997
- https://forums.qloapps.com/topic/1907/how-many-days-before-a-delta-flight-can-you-cancel-can-you
