https://central.xero.com/s/question/0D58V00009TPQxRSAX/cancelnow-does-delta-have-a-cancellation-policy
https://central.xero.com/s/question/0D58V00009TPQxRSAX/cancelnow-does-delta-have-a-cancellation-policy
https://central.xero.com/s/question/0D58V00009TPQxRSAX/cancelnow-does-delta-have-a-cancellation-policy