"Will you pay cash or with credit card?"
"Why, cash of course!"
"Thanks. Do you have a Payback card?"
"Certainly."
> "Certainly."
Rather: "Thanks. Do you have a Payback card?" - the person holds a speech about the privacy implications of Payback when there is a long queue at the checkout. :-D
"Will you pay cash or with credit card?"
"Why, cash of course!"
"Thanks. Do you have a Payback card?"
"Certainly."