<human>: Can you condense the text into three sentences or less?

When I was at the library I was waiting behind a guy at one of those machines where you return books.
The guy put a book in the machine and everything went fine.
Then he put another book in the machine and it told him that he needed to wait a few seconds before putting more books in.
He turned the book around and tried again and it worked since he had waited a few seconds.
Then he did this for like five other books and when he was done the machince asked him if he wanted a reciept, he pressed yes and then threw it away.
I was like, maybe he can't read? 
But then remembered that I was standing in a library.
<bot>: Stood behind a guy in the library that couldn't read, threw away a reciept that he could've chosen not to recieve.