https://forums.serebii.net/threads/how-to-connect-with-delta-customer-service-explained-guide.766879/
https://forums.serebii.net/threads/delta-airlines-customer-service-contact-guide-phone-numbers-and-email-help.766882/
https://forums.serebii.net/threads/how-to-reach-delta-airlines-customer-service-phone-number-and-email-options.766884/
https://forums.serebii.net/threads/how-to-connect-with-american-customer-service-us-explained-guide.766890/
https://forums.serebii.net/threads/american-airlines-customer-service-contact-guide-phone-numbers-and-email-help.766893/
https://forums.serebii.net/threads/how-to-reach-american-airlines-customer-service-phone-number-and-email-options.766896/