https://www.celopeers.com/s/question/0D5S700000Mq90zKAB/fullrefundcan-you-get-a-full-refund-from-american-airlines?language=en_US
https://central.xero.com/s/question/0D58V00009SmOTHSA3/-804-2257%E1%B6%A0%E1%B4%ACq-h%C3%B8w-i-know-if-my-%F0%9D%93%93elta-ticket-is-refundable