https://www.wyomilitary.wyo.gov/wp-content/uploads/formidable/14/e-x-p-e-dia-usa-customer-service-full-step-by-step-guide.pdf

https://education.aaaai.org/sites/default/files/webform/complete-list-of-official-expedia-customer-contact-numbers-in-the-usa-the-ultimate-detailed-guide.pdf

https://www.thefreshloaf.com/node/77309/16-ways-talk-live-united-airlinesr-agent-step-step-help

https://officialcustomerservicehelpdesk.zohodesk.com/portal/en/kb/articles/is-expedia-really-fully-refundable

https://community.carbide3d.com/t/complete-list-of-singapore-airlines-usa-contact-numbers-a-2025-step-by-step-guide/94219

https://www.saratoga.com/event/expedia-customer-support-contacts-a-complete-202526-guide-to-assistance-267882/

https://discuss.tindie.com/t/full-list-of-official-united-airlines-customer-contact-numbers-the-ultimate-official-guide/534016

https://community.carbide3d.com/t/full-list-of-southwest-airlines-customer-service-usa-contact-numbers-a-complete-guide/94007

https://educativ.net/forums/topic/39853-ways-to-connect-with-allegiant-airlines%C2%AE%EF%B8%8F-agent-instantly/

https://educativ.net/forums/topic/39892-%E2%98%857%E2%98%85-ways-to-speak-with-allegiant-airlines%C2%AE%EF%B8%8F-live-agent-%E2%80%93-detailed-guide/