https://**********bluebeam.com/bluebeam-community/discussion/2801/%F0%9D%9F%8F-%F0%9D%9F%96%F0%9D%9F%96%F0%9D%9F%96-%F0%9D%9F%94%F0%9D%9F%93%F0%9D%9F%95-%F0%9D%9F%96%F0%9D%9F%91%F0%9D%9F%96%F0%9D%9F%8E-does-delta-have-a-cancellation-policy-usa-delta/p1?new=1