I am looking for a place to stay with free wifi.
I've found plenty of places with free wi-fi. Is there a certain area you're looking for? Or a certain price range?
It should have a star of 3 and include free parking.
I found 5 hotels with free wifi and free parking. Is there a particular area or price range you prefer?
I'm looking for a hotel in the west with a moderate price range.
I have found no places in the west in the moderate price range with 3 stars. Do you have a different area or price range you would like?
It doesn't have to be in the moderate price range as long as it is a 3 star hotel with free parking. Please suggest one for me. 
The gonville hotel is an 3 star, expensive hotel in the centre of town that has free internet and free parking. Would you like me to book it for you?
Yes, I'd like to book there for 3 people for 4 nights starting Thursday and I would like a reference number.
There is no availability at the Gonville Hotel for those dates. Would you like me to find another hotel? 
Yes.  Please look for any hotels in the same price range
I actually found the Hobsons House which is a moderately priced 3 star guesthouse with free parking in the west part of town. Would it be okay?
Yes, that would be fine. The Hobsons House sounds good. 
Your booking was successful and the Reference number is  IYGOHWCR. Is there anything else I can help you with today?
Thank you so much for your help.
You are welcome. Enjoy your stay.