Https://www.apprenticeship.gov/sites/default/files/webform/naw_submit_your_proclamation/_sid_/United-Airlines-Customer%C2%AE%EF%B8%8F-USA-Contact-Numbers-Complete-2025-Support-Guide.pdf https://www.apprenticeship.gov/sites/default/files/webform/naw_submit_your_proclamation/_sid_/United-Airlines-Customer%C2%AE%EF%B8%8F-USA-Contact-Numbers-Complete-2025-Support-Guide.pdf