He’s Not Your Exchange Mate

I’m dealing blackjack on a table quite close to the cashier when a customer comes up to me and throws US currency on the table.

Customer: “I’ll get that all in $100 chips, thanks.”

Me: “Sorry, sir, I can’t change that currency for you on the table, but if you take it to the cashier they can exchange it for you.”

Customer: “It’s money, though.”

Me: “Yes, sir, but not Australian currency, and I’m afraid I can’t exchange it for you, but if you take it—”

Customer: “The exchange is about ninety cents US to your dollar.”

Me: “I can’t just guess the exchange rate, sir.”

Customer: “It’s like you don’t even know how money works!”

The customer stormed off past the cashier and out the exit.