Customer: “I need to change my currency before I get on the train to Paris.”

Me: “Okay, sir. There is a Bureau De Change just over there where you can purchase your Euros.”

Customer: “What? I already have Euros. I need to get some Francs.”

Me: “Sir, they only accept Euros in France now. You will not need Francs.”

Customer: “OK whatever. Next question: how do I get to France from Paris?”