Library Encounter

Yesterday afternoon, I was in the library researching the availability of a few books I wanted to read. A father and his disinterested teenage daughter sat down in the chairs next to me. He typed in a book on the computer and then he left again with his daughter in tow. After they had been gone for a few minutes, I took a peek at the book he had been trying to find (he left the search page up). Turns out it was "How to Win Friends and Influence People".
I wondered if the book was for the man or his daughter.