Can you help me find a restaurant please?
Certainly, to narrow it down, do you have a preference for what part of the city it is in or what type of food is served?
I want one in the certre area and in the moderate price range. 
I have found some restaurants. They serve asian oriental, british, chinese, european, gastropub, international, italian, lebanese, modern european, spanish, and turkish.
I don't care what type of food they serve.  What would you recommend?
I've heard good things about Riverside Brasserie, they serve Modern European cuisine. Would you like to see if they have tables available?
That sounds good, I have a group of seven and we want to eat at 20:00 on Friday.
Unfortunately I wasn't able to get the reservation for you. Would you like me to try somewhere else?
Can you recommend another moderately priced restaurant located in the centre?
What about the Copper Kettle? They serve British cuisine.
That would work, please book that.
Good news! Booking was successful. The table will be reserved for 15 minutes.
Reference number is : ZXIRY17R.
Thanks for all your help. Good bye.
Thank you goodbye.