https://community.automationdirect.com/s/question/0D5PE00000NmXm50AF/ac-cancellation-policywhat-is-the-24-hour-cancellation-policy-for-canada-flights
https://stubhub.community/t5/Events-and-Venues/how-does-Robinhood-make-money-Easy-Guide/m-p/256341#M108649
https://community.ui.com/questions/Does-Delta-have-a-cancellation-policy-FAQ/2a423cf2-d1c3-45e9-8556-4873cc32e5ea