https://www.scienceforums.com/topic/96376-25-ways-to-speak-to-someone-at-frontier-airlines%C2%AE%EF%B8%8F-a-complete-guide/
https://konfhub.com/twenty-ways-to-talk-to-someone-at-united-airlines-via-phone-email-or-chat-a-step-by-step-guide
https://www.goodreads.com/quotes/13079461-to-cancel-your-aerom-xico-flight-1-87-78278-493-usa-you-can-do
https://regions-and-cities.europa.eu/sites/default/files/webform/multimedia_center/_sid_/persona-en-american-%C2%BFcomo-hablar-con-una-persona-en-american-airlines.pdf
https://www.scienceforums.com/topic/96377-14-ways-to-contact-frontier-airlines-usa-contact-numbers-the-complete-guide/
