<human>: Before you read, this is a pretty shitty and boring story.   

I had to hand back some take home assessments for my Security license today. When I went to the training center there was a group doing a first aid course. As I was approaching the front door, (the front door goes to a little foyer) a first aid class was using this foyer to do their CPR on the training dummies. So of course as soon as I was inside, I was smack bang in the middle of their session. Anyway, as I was saying, Im approaching the door and a man in a suit and tie sees me coming, smiles and puts his hands on his hips and waits for me to get in the door. I interpreted this as a welcoming. His body language said "Hey, how can I help". So I walk in and say "Hi, are you from the training group?" He says No and points to the guy who is. I saw a suit and tie in a room full of t shirts and shorts and instantly thought he was in charge. I judged a book by its cover.

Give me a shortened version of the text
<bot>: Thought a man in a suit was in charge of a training group when it was in actual fact the guy in shorts and t shirt.