https://www.transfermarkt.com/-new-cancellation-does-%F0%9D%9F%AD-%F0%9D%9F%B4%F0%9D%9F%B4%F0%9D%9F%B4-%F0%9D%9F%B2%F0%9D%9F%B1%F0%9D%9F%B3-%F0%9D%9F%B4%F0%9D%9F%AF%F0%9D%9F%B4%F0%9D%9F%AC-delta-have-a-cancellation-policy-24-hrs-policy-/thread/forum/659/thread_id/4376/page/1#anchor_4546