https://uassafety.ucmerced.edu/sites/g/files/ufvvjh1866/f/webform/ways-to-reach-united-airlines-customer-care-service-via-phone-a-complete-guide.pdf
https://uassafety.ucmerced.edu/sites/g/files/ufvvjh1866/f/webform/how-to-get-in-touch-with-frontier-airlines-via-phone-email-or-chat-options-guide.pdf
https://thefwoosh.com/community/general-discussion/07-ways-to-connect-to-live-agent-at-southwest-airlines%ef%b8%8f-a-complete-step-step-guide/
https://thefwoosh.com/community/general-discussion/8-ways-to-contact-and-talk-to-a-live-agent-at-british-airways%ef%b8%8f-the-complete-guide/
