Customer: “I want a book to complete the set for my grandson.”

Me: “Certainly, madam. Can I ask what you’re looking for?”

Customer: “Well, he’s interested in history. I want to encourage him, so he’s already got books on World War 1 and World War 2. I want to get him the next one so he can be prepared before they do it at school.”

Me: “Um, the next one?”

Customer: “Yes. Haven’t you got anything on World War 3? I’ve looked all over.”

Me: “I’m sorry, madam. I’m pretty certain we don’t have anything on that subject at the moment.”

Customer: “Oh, never mind then. I’ll try a bigger bookshop.”