'Dear Mr. Human': Airline's Apology Letter Fail

— -- When a response to a complaint letter starts out "Dear Mr. Human," there's reason to suspect it wasn't written by a human at all.

That's how Chris Chmura was addressed in a letter from United Airlines earlier this month. Chmura, a consumer news reporter in Florida, tweeted out a photo of the letter that has since been picked up by frequent flier blogs and consumer sites.

Chmura said he showed up to a flight 20 minutes before it was supposed to take off, but the flight was already gone. His complaint to United asked the airline to investigate the gate worker.

United's customer service hasn't been taken over by bots, though. The airline told ABC News it was a spell-check error.

"His name and 'human' are relatively similar,” spokesman Charles Hobart said. “The auto correct changed the name from Chmura to Human and the agent just missed it. We've reached out to apologize for getting his name wrong."