https://recroom.zendesk.com/hc/en-us/community/posts/26723946313623–Get-Refund-How-do-I-know-if-my-Delta-ticket-is-refundable
https://recroom.zendesk.com/hc/en-us/community/posts/26723946313623–Get-Refund-How-do-I-know-if-my-Delta-ticket-is-refundable