https://www.transfermarkt.com/delta-airlines-representative-1-866-393-1325-for-flight-reservation-change-and-cancellation/thread/forum/659/t...

https://www.devex.com/people/*********-airlines-representative-quick-booking-new-reservation-flight-change-2006547

https://www.devex.com/people/american-airlines-representative-help-for-new-reservation-and-flight-change-2006483