Reserve (accounting) Puns

I work as a front desk associate for a major hotel chain that has a rewards program, but the guest checking in, a Mr. Zingone, didn't have it on his reservation. I tried searching for it several different ways, just the surname "Zingone," just his phone number, but ultimately could not find his account information.

So I told him, "Well, you may have had a membership, but it looks like it's... Zin-gone..."

He told me no more humor, just get me to my room. I think he was just as impressed, however.