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https://thelinuxforum.com/forum/general-linux-forums/general-linux-discussions/14248-~-expedia-refund-eligibility-what-is-expedia-cancellation-policy-refund~guide
https://thelinuxforum.com/forum/general-linux-forums/general-linux-discussions/14531-call~delta-does-delta-have-a-cancellation-policy-policyguide