Passenger Gets Ominous Confirmation Code Delta passenger Kathryn Stockett's airline confirmation number is shown. (@kathrynstockett/Twitter) Airline passenger Kathryn Stockett might want to reconsider her Delta flight. Stockett, author of the popular book-turned-movie The Help, tweeted on Aug. 8 the above photo with the message to @Delta "Dear Delta Airlines, I know we've been through some hard times together but is this really my conf number?" The confirmation number? The next day, the airline tweeted back from its dedicated Twitter account @DeltaAssist: "The confirmation numbers are randomly generated. We will add this to a list of banned alpha-numeric combinations. *CS" (CS = Customer Service). And: We are terribly sorry for the combination of letters used for your itinerary. *CS