I want to find an expensive 4 star hotel.
I have 2 expensive 4 star hotels, one in the west and one in the centre of town. Do you have a preference to area?
Do you have one in the south that includes free parking? 
I'm sorry, no, none in the south.
Okay, I'd really like to stay on the south end of town so is there one in the cheap price range instead?
i don't have any hotels in the south part of town.
Well are there any cheap hotels anywhere in town?
There is a cheap hotel with 4 stars on the west side of town. If you could restate your exact preferences I can try searching again. 
Sure.  Look for a cheap hotel, 4 stars, in the south.  Free parking also.
There are no hotels that meet your criteria in the south.  There is one cheap 4 star guesthouse with parking in the south. Does that work?
Can we start over? I think there is a bit of confusion. I need a hotel with four stars, in the south, and free parking
There is nothing in the expensive range, there is a choice of one cheap or one moderate 4 star guesthouse in the south with parking. Would either of these be OK?
Cheap is fine. Please book for Friday, 3 nights, 3 people.
It is not open then, how about a shorter stay?
I can book for 1 night instead.
Very good.  You are set for 1 night at Rosa's.  The reference number is 8QUJMPP7.  Is there anything else I can help with?
No, that's it for now.  Thank you.
You're welcome. Enjoy your day.