https://urbanedjournal.gse.upenn.edu/sites/default/files/webform/2025-united-airlines-customer-service-numbers-a-complete-guide.pdf https://urbanedjournal.gse.upenn.edu/sites/default/files/webform/Complete-List-of-American-Airlines-CuStOmEr-Service-Phone-Numbers-Assistance-Guide.pdf https://urbanedjournal.gse.upenn.edu/sites/default/files/webform/Complete-List-Of-Air-France-Customer-Service-Contact-Numbers-24-7-Live-Person-Assistance-G-Uide.pdf https://urbanedjournal.gse.upenn.edu/sites/default/files/webform/complete-list-of-delta-airlines-r-customer-service-contact-numbers.pdf https://urbanedjournal.gse.upenn.edu/sites/default/files/webform/Complete-List-Of-Air-Mauritius-Customer-Service-Contact-Numbers-24-7-Live-Person-Assistance-G-Uide.pdf