https://forum.takiacademy.com/t/help-speak-to-live-agent-at-united-airlines-usa-customer-guide/1250

https://forum.takiacademy.com/t/american-airlines-customer-service-numbers-complete-2025-directory/1220

https://gsa.unimelb.edu.au/wp-content/uploads/formidable/5/help-talk-to-live-agent-at-united-airline-usa-contact-numbers-guide-.pdf

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https://onedayhit.com/wp-content/uploads/2025/08/Best-Ways-to-Reach-Lufthansa-USA-Customer-Support-24_7-888-5316247.pdf

https://gsa.unimelb.edu.au/wp-content/uploads/formidable/5/help-talk-to-live-agent-at-frontier-airline-usa-contact-numbers-guide-.pdf

https://airlineticketttt.zohodesk.com/portal/en/kb/articles/what-is-the-cheapest-day-to-book-a-lufthansa-flight-11-8-2025