https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology_partner/_sid_/six-ways-to-access-priceline-customer-service-by-phone-number-chat-and-email.pdf
https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology_partner/_sid_/nine-ways-to-access-united-airlines-customer-service-by-phone-number-chat-and-email.pdf