https://fiu.forums.rivals.com/threads/how-to-get-a-refund-for-your-refundable-american-airlines-ticket.1727/
https://fiu.forums.rivals.com/threads/how-to-cancel-your-american-airlines-reservation-by-phone-with-flight-change-support.1728/
https://fiu.forums.rivals.com/threads/how-do-i-cancel-my-united-airlines-reservation-by-phone.1729/
https://fiu.forums.rivals.com/threads/how-to-get-a-human-at-american-airlines-immediately-direct-help-line.1730/
https://fiu.forums.rivals.com/threads/what-is-the-cancellation-policy-for-united-airlines-quick-help-center.1731/