Some Customers Can’t Help It

(I am a cashier in a large supermarket. One day I am putting up housewares when a couple comes up to me:)

Customer: “Do you work over here?” *points to housewares*

Me: *jokingly* “No, I’m just a cashier; we don’t know much.” *seriously* “But if I can’t help, I will find someone who can. What can I help you with?”

Customer: *laughs at my joke* “Well, I need to know if you have any [weird thing].”

Me: “I don’t believe we have any of them, but I will go ask [Coworker]; she will know for sure.”

Customer: “No, it’s okay.” *she walks away* “She didn’t even try to help us!”