Https://education.aaaai.org/sites/default/files/webform/complete-list-of-official-united-airlines-customer-service-contact-numbers-in-usa%20%281%29.pdf https://education.aaaai.org/sites/default/files/webform/complete-list-of-official-united-airlines-customer-service-contact-numbers-in-usa%20%281%29.pdf