https://central.xero.com/s/question/0D58V00009PjLXBSA3/officialdadoes-delta-have-a-cancellation-policy
https://central.xero.com/s/question/0D58V00009PjMppSAF/name-change-in-your-ticket-how-can-i-change-my-name-on-united-airlines-ticket