This could be put into the basket of “I don’t know what to respond, other than: “Do you even think what you’re saying”.
We are going to a cafe for afternoon tea which I booked a few days ago.
Sanj: Have you already paid for this?
Me: Nooo, it’s a cafe. You don’t buy tickets for it. You pay for the food you eat.
Sanj: Do you know how much it is?
Me: It’s £6 per person.
Sanj: Including Arya?
The problem here is that he doesn’t understand where he went wrong.