It finally happened. It took me more than 400 flights on United Airlines, but last week I met the legendary “Captain Denny” — or Dennis J. Flanagan, to be proper. If he was ever your pilot, you most likely still remember the experience.

I had heard a lot about Mr. Flanagan’s rarely attentive customer-service approach from fellow travelers, and even spoken with him on the phone with the intention of writing about him, but not having met him in person always stopped me. Now I have no more excuses. Our encounter wasn’t planned. As I boarded a plane in Phoenix, I saw a pilot greeting passengers at the door and handing out small information cards about the Boeing 757 he was about to fly…