I am looking for a nice restaurant in the center of town.
Do you have a price ranger preference? 
he restaurant should be in the expensive price range.
There are 33 expensive restaurants in the centre of the city. What type of cuisine are you seeking?
I'd like Japanese food, please. 
Yes I found a perfect fit for you. Wagamama is a Japanese restaurant that serves expensive food in the center of town. Would you like their address and telephone number?
Yes please as well as their postcode.
The address is 36 Saint Andrews Street	, cb23ar, and the phone number is 01223462354. 
Thank you for your help. I appreciate it!
You're welcome. Do you need any further assistance?
No thank you that will be all for today!
You're very welcome. Feel free to call us again in the future. Have a nice evening.