https://www.workingus.com/forums/topic/12-ways-to-contact-british-airways-%ef%b8%8f-usa-contact-numbers-the-step-by-step-co/
https://airlinescom.zohodesk.com/portal/en/kb/articles/1-877-827-8493-how-do-i-contact-lufthansa-customer-care
https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology_partner/_sid_/speak-to-live-agent-at-american-airlines.pdf