https://obsproject.com/forum/threads/travelocity%C2%AE%EF%B8%8F-customer-service%E2%84%A2%EF%B8%8F-usa-contact-numbers-a-complete-2025-guide.187785/
https://otc.education.tamu.edu/wp-content/uploads/formidable/3/Delta-Airlines%C2%AE-Customer-USA%C2%A9%EF%B8%8F-Contact-Numbers-A-Simple-Step-Guide.pdf
https://otc.education.tamu.edu/wp-content/uploads/formidable/3/United-Airlines%C2%AE-Customer-USA%C2%A9%EF%B8%8F-Contact-Numbers-A-Simple-Step-Guide.pdf
https://hackmd.io/@expedia-hub/expedi𝓪®️-customer-servicetm️-usa-contact-numbers-in-detail-2025-guide