I would like to blow my budget at an expensive restaurant in the centre area.
Sounds like you are celebrating.  What type of food do you want to have?
I'd love to have some Persian food.
Unfortunately, there aren't any expensive Persian restaurants in the center of town. Are you interested in a different type of expensive food? 
how about one that serves european food?
I could recommend Eraina. It is expensive and serves European food in the center.
Sounds perfect. Can you book me a table for 2 at 17:45 on wednesday?
I have booked a table for two at Eraina. Your reservation is at 17:45 on Wednesday, and your reference number is QEYTLGLK. Can I help you with anything else?
Is there park in the same area as the restaurant? If so can you tell me what the entrance fee is?
The Cambridge University Botanic Gardens is in the centre of town. Entrance fee is 4 pounds. Is there anything else I can assist you with?
Could I get a taxi please from that park to take me to the restaurant in time for my reservation? And give me contact number and car type too please
Yes, a white bmw is booked. The contact number is 07805333203. Will that be all for you?
Yes, that's it! Thanks so much, bye!
You're welcome and enjoy your stay.