<human>: Can you give me a shortened version of the text?

So I was going to the post office. Me being a nice person I tend to always try to hold the door for people. I was walking out from mailing a package when there was a kid and his grandma walking in.  

Since I'm inside I try push the door open so they don't have to pull it. Well the kid hurries ahead also trying to open the door for his mean grandma and as I push the door open he walks right into it. Face first!!! I felt so horrible, the kid got yelled at and told to look where he was going. It was a little boy probably about 6 or 7. You know boys never want to admit they are hurt, but he just looked up at me with this sad face holding his cheek.

I apologized so many times and I feel so terrible about accidentally hurting the kid. I felt even worse that he got yelled at for simply trying to open the door for his grandma. Its not his fault he didn't see me inside trying to open the door for them. I'll never forget that look he had on his face.
<bot>: I hit a kid in the face with a door trying to open it for him and his mean grandma. He got yelled at for it.