Https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology_partner/9200/Top-Route-copyright-Customer-Service-For-Reservations-Booking-Flights-Hotels-Car-Rental-%26-Cruise-In-Step-by-step-Depth-Guide.pdf https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology_partner/9200/Top-Route-copyright-Customer-Service-For-Reservations-Booking-Flights-Hotels-Car-Rental-%26-Cruise-In-Step-by-step-Depth-Guide.pdf