https://www.devex.com/people/get-refund-what-is-the-cancelation-cancelation-policy-for-united-airlines-2185485
https://www.ingrammicroresellerapplication.com/forums/general-discussion/163cb5f9-00bb-ef11-95f6-002248507b90
https://central.xero.com/s/question/0D58V00009nRFf4SAG/contact-18557384265united-airlines-business-class-first-north-americasouthamerica