https://www.perio.org/wp-content/uploads/ninja-forms/40/How-to-Contact-United-Airlines-Customer-Service-1-844-243-6776.pdf

https://www.perio.org/wp-content/uploads/ninja-forms/40/Ways-to-Reach-How-do-I-Speak-to-Someone-at-United-Airlines-A-Step-By-Step-Comprehensive-Guide.pdf

https://www.perio.org/wp-content/uploads/ninja-forms/40/10-Easy-Ways-to-Call-and-Talk-to-a-Real-Person-at-Southwest-Airlines.pdf

https://sophia459811.wixsite.com/travel-solution/post/how-to-contact-united-airlines-customer-service-1-844-243-6776

https://pathology.wustl.edu/app/uploads/formidable/222/25-Easy-Ways-to-Call-and-Talk-to-a-Real-Person-at-Southwest-Airlines.pdf