https://www.devex.com/people/understanding-southwest-does-southwest-have-24-hour-cancellation-fee-2198903
https://www.ingrammicroresellerapplication.com/forums/general-discussion/d60707f8-64bc-ef11-95f5-7c1e52398eae
https://www.ingrammicroresellerapplication.com/forums/general-discussion/4db29af2-61bc-ef11-95f5-7c1e52398eae
https://www.ingrammicroresellerapplication.com/forums/general-discussion/e9f440e9-61bc-ef11-95f5-7c1e52398eae