https://www.oise.utoronto.ca/deepeningknowledge/wp-content/uploads/ninja-forms/2/espanol-%C2%BFcomo-hablar-con-un-agente-de-expedia-en-espanol.pdf
https://www.scienceforums.com/topic/92454-six-ways-to-access-how-can-i-speak-to-someone-at-delta-airlines-%E2%84%A2-a-step-by-step-best-guide/
https://www.scienceforums.com/topic/92529-05-ways-to-reach-get-in-touch-with-southwest-airlines%C2%AE%EF%B8%8Fus-a-step-by-step-guide/
https://www.scienceforums.com/topic/92945-five-or-more-ways-to-contact-to-someone-at-spirit%C2%AE-airline%E2%84%A2%EF%B8%8F-step-by-step-guide/