https://official-us-spirit-airlines-help.odoo.com/knowledge/article/39

https://official-american-air-lines-helpcenter.odoo.com/blog/frontier-240-8/ways-to-reach-frontier-airlines-customer-service-phone-chat-and-email-contact-explained-42

https://community.whattoexpect.com/forums/austin-parents/topic/ways-to-get-in-touch-with-american-airlines-phone-chat-and-email-assistance-guide-169683835.html

https://official-us-spirit-airlines-help.odoo.com/knowledge/article/35

https://official-united-air-lines-helpcenter.odoo.com/knowledge/article/146

https://otx.alienvault.com/pulse/68036529b71250d79f778086

https://official-american-air-lines-helpcenter.odoo.com/blog/frontier-240-8/ways-to-call-frontier-airlines-customer-service-phone-chat-and-email-options-explained-guide-41

https://official-american-air-lines-helpcenter.odoo.com/blog/delta-230-7/ways-to-get-in-touch-with-delta-airlines-phone-chat-and-email-assistance-guide-35

https://otx.alienvault.com/pulse/680363758711acd75be667b8

https://official-american-air-lines-helpcenter.odoo.com/blog/delta-230-7/ways-to-get-delta-airlines-customer-support-phone-chat-and-email-contact-details-34