"Excuse me, when is the stop..."
"Listen, lady. This is the second time you've asked me, and I already told you I'd let you know when we're at your stop."
"I'm sorry, but I've only asked you once."
"And if you ask me five times, you're still going to get the same answer from me. I'll let you know when we're at your stop."
"Why thank you..."
"Don't mention it."