https://discourse.jabref.org/t/list-of-american-airlines-usa-live-customer-help-2025-contact-directory/6822
https://discourse.jabref.org/t/full-list-of-american-airlines-customer-contact-phone-number-a-ultimate-guide/6844
https://discourse.jabref.org/t/list-of-american-airlin-service-center-usa-a-detailed-2025-guide/6847
https://forum.duplicacy.com/t/official-united-customers-care-usa-contact-numbers-directly-speak-to-agent-2025/10383
https://discourse.jabref.org/t/official-delta-airlines-usa-customer-support-directory-2025-reference/6905