https://superuser.com/questions/1883547/fullinfo-what-is-flexible-cancellation-pricelinehttps://superuser.com/questions/1883547/fullinfo-what-is-flexible-cancellation-pricelinehttps://superuser.com/questions/1883547/fullinfo-what-is-flexible-cancellation-pricelinehttps://superuser.com/questions/1883547/fullinfo-what-is-flexible-cancellation-priceline