https://stubhub.community/t5/Events-and-Venues/Dial-1-866-672-8652-Delta-Airlines-Cancellation-Policy/m-p/257230#M109117
https://stubhub.community/t5/Events-and-Venues/Dial-1-866-672-8652-Delta-Airlines-Cancellation-Policy/m-p/257230#M109117