https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology_partner/_sid_/connect-to-live-agent-at-american-airlines.pdf
https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology_partner/_sid_/18-ways-to-dial-silversea-cruises%C2%AE-customer-servicecomplete-help-guide-usa.pdf
https://airlinescom.zohodesk.com/portal/en/kb/articles/1-877-827-8493-how-do-i-contact-lufthansa-customer-care-3-7-2025-2
