"I don't look at someone and think, 'I'm going to make a sale.' I look at them and think, 'I know a book you're going to love.'"<idle musing>
That's my attitude exactly. I would change the wording a bit and say, "I know a book that you really need for your current research interest." But otherwise, her approach is the same as mine. I let the books sell themselves; all I do is introduce people to them.