Literary Misunderstanding

A student stormed up to the front desk of the library and said, "I have a complaint!"

"Yes, ma'am?"

"I borrowed a book last week and it was horrible!"

"What was wrong with it?"

"It had way too many characters and there was no plot whatsoever!"

The librarian nodded and said, "Ahh. So you must be the person who took our phone book."