Customer: “I’m looking for a book on Ronald Reagan.”

Me: “OK, well, that would be right here in the American history section.”

Customer: “It’s a particular book, one with transcripts of all his speeches. I’ve seen it here before.”

(I spend at least 15 minutes exhaustively searching the shelves to find the book, with no luck.)

Me: “It seems we don’t have it. If you’d like, I can write it down and call you if we get another copy in.”

Customer: “That’s impossible. You always had it right here.”

Me: “I’m sorry, someone must have bought it.”

Customer: *exasperated* “I know. I’m the one who bought it.”