https://cris.unu.edu/sites/cris.unu.edu/files/webform/30-ways-to-reach-volaris-airlines-support-by-email-phone-live-chat-via-call-email-or-chat.pdf

https://cris.unu.edu/sites/cris.unu.edu/files/webform/thirty-3-ways-to-reach-a-human-at-alaska-airlines-via-email-call-or-chat.pdf

https://cris.unu.edu/sites/cris.unu.edu/files/webform/20-ways-to-reach-alaska-airlines-customer-care-and-speak-to-a-live-agent-via-phone-chat-or-email.pdf

https://cris.unu.edu/sites/cris.unu.edu/files/webform/twenty-six-ways-to-call-and-talk-to-a-human-at-jetblue-airlines-customer-help-center.pdf

https://paperswithcode.com/method/full-supporttm-how-do-i-get-a-refund-from-1

https://cris.unu.edu/sites/cris.unu.edu/files/webform/7-quick-steps-to-talk-to-a-real-person-at-united-airline-full-manual-_0.pdf

https://speakerdeck.com/nigeg123/nine-ways-to-call-how-can-i-speak-to-human-at-airlines-a-comprehensive-guide

https://cris.unu.edu/sites/cris.unu.edu/files/webform/%5BGu%C3%ADa-r%C3%A1pida%5D%C2%BFC%C3%B3mo-hablo-con-alguien-en-Volaris.pdf

https://flyairlines.zohodesk.com/portal/en/kb/articles/c%C3%B3mo-hablo-con-un-representante-de-klm

https://flyairlines.zohodesk.com/portal/en/kb/articles/c%C3%B3mo-hablo-con-un-representante-de-klm