"And how is Leah today?"

There's a chronically perky teller at my business bank. Esmerelda (not her real name) is usually about halfway through the transaction when she suddenly asks me "And how is Leah today?" I've been working on some smart-alecky answers.
--"I don't know. I haven't talked to her lately."
--"She's fine. And how is Esmerelda today?"
--"Who?"
--"She's got a good beat, and you can dance to her."
I probably don't have the nerve to use any of these, which is just as well, since you shouldn't mess with someone who has access to your cash.