https://teachers.io/americancustomerhub/blog/2025/8/23/full-list-of-2025-american-airlines-support-usa-contact-numbers-the-official2025
https://teachers.io/americancustomerhub/blog/2025/8/23/complete-list-of-official-american-airlines18886578380tmcustomer-service-tm-contact-numbers-usa
https://forum.novaskin.me/t/100-full-list-of-united-airlines-support-numbers-855-875-0129-in-the-us-2025-official-guide/29151