https://patch.com/california/unioncity/calendar/event/20250301/6217d0a0-e5c1-410a-8f13-ad34dd75d9fc/how-to-escalate-an-issue-with-expedia
https://www.muthead.com/forums/general-help/353814-como-puedo-cambiar-la-fecha-de-mi-vuelo-lufthansa-airlinesguia-rapida/
https://www.muthead.com/forums/general-help/353814-como-puedo-cambiar-la-fecha-de-mi-vuelo-lufthansa-airlinesguia-rapida/ muthead.com
https://www.goodreads.com/quotes/12597187-how-do-i-avoid-expedia-cancellation-fee-when-booking-travel goodreads.com