https://knowt.com/note/a250d746-e7d2-4e71-be4b-9fe037dea14b/Cancelled-Flight-Does-United-give-refu youmobs 3 days ago https://knowt.com/note/a250d746-e7d2-4e71-be4b-9fe037dea14b/Cancelled-Flight-Does-United-give-refu