I'm looking for a guesthouse to stay at with a four star rating
Certainly, there are 18 options. Is there an area of town that you prefer? 
Yes in the north and it should be 4 stars and have free wifi please.
I found the acorn guest house! It has free wifi and parking, four star rating and is in a moderate price range! Would you like me to book it? 
Yes! I would like a booking please.
How many guests and how many nights would you like the reservation for?
On second thought, I am not quite ready to book yet. Could you send me their postcode, please?
The postcode is cb41da.
Thanks so much for your help!
Your welcome. Can I help you find anything else today?
That is all! Thank you!
Thank you, goodbye.