Https://www.apprenticeship.gov/sites/default/files/webform/naw_submit_your_proclamation/_sid_/How-to-Connect-United-Airlines-Customer-Service-By-Phone-Number-Chat-and-Email-Options.pdf https://www.apprenticeship.gov/sites/default/files/webform/naw_submit_your_proclamation/_sid_/How-to-Connect-United-Airlines-Customer-Service-By-Phone-Number-Chat-and-Email-Options.pdf