https://w.atwiki.jp/sadfasdf23/pages/14.html

https://www.uncrownedgaming.com/forums/topic/4741-complete-list-of-american-airlines%C2%AE-domestic-contact-information-your-complete-instructional-guide-for-customer-service/

https://w.atwiki.jp/airlineshelpcentre/pages/20.html

http://linode.mono.ca.gov/faqshow-save-money-british-airways-flights

https://metalarea.org/forum/index.php?showtopic=419076

https://metalarea.org/forum/index.php?showtopic=419075

https://metalarea.org/forum/index.php?showtopic=419073

https://www.uncrownedgaming.com/forums/topic/4738-american-airlines%C2%AE-us-contact-numbers-a-comprehensive-step-by-step-guide-to-reach-the-right-department/

https://w.atwiki.jp/airlineshelpcentre/pages/17.html

https://www.uncrownedgaming.com/forums/topic/4735-detailed-full-list-of-united-airlines%C2%AE-how-to-contact-us-support-a-step-by-step-handbook-for-resolving-issues/