Https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology_partner/_sid_/Last-Ways-to-Dial-United-Airlines-Customer-Service-Via-Phone.pdf https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology_partner/_sid_/Last-Ways-to-Dial-United-Airlines-Customer-Service-Via-Phone.pdf https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology... https://ctl.gatech.edu/sites/default/files/webform/teaching_with_technology_partner/_sid_/Last-Ways-to-Dial-United-Airlines-Customer-Service-Via-Phone.pdf