Https://it.discourse.mcneel.com/t/full-list-of-american-airlines-customer-service-contact-numbers-in-the-usa-an-updated-step-by-step-guide/6781 https://it.discourse.mcneel.com/t/full-list-of-lufthansa-airlines-customer-service-contact-numbers-in-the-usa-an-updated-step-by-step-guide/6782 https://it.discourse.mcneel.com/t/full-list-of-united-airlines-customer-service-contact-numbers-... https://it.discourse.mcneel.com/t/full-list-of-american-airlines-customer-service-contact-numbers-in-the-usa-an-updated-step-by-step-guide/6781