ATLANTA, Aug. 9 (UPI) — Delta Airlines, headquartered in Atlanta, said it will ensure its system does not use “GONER” in confirmation numbers after it appeared on a passenger’s ticket.

Passenger Kathryn Stockett posted a picture of a Delta ticket to her Twitter account and noted the confirmation number, which read “GONER5,” NBC News reported Friday.

“Dear Delta Airlines, I know we’ve been through some hard times together but is this really my conf number?” Stockett posted.

Delta said the confirmation numbers are randomly generated, but officials will be ensuring the pattern does not come up in the system again.