1. May I help you?
 Yes, I'd like to buy these razors.
 Okay, that'll be $6.85 with tax.
 

2. What can I do for you?
I'm looking for the cameras.
They're in Aisle Two.
 

3. Is there something I can help you with?
No, I'm just browsing. Thanks anyway.
Ok.
How much is this?
It's $4.95.