i need a place to dine in the center thats expensive
I have several options for you; do you prefer African, Asian, or British food?
Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?
There is an Afrian place named Bedouin in the centre.  How does that sound? 
Sounds good, could I get that phone number? Also, could you recommend me an expensive hotel?
Bedouin's phone is 01223367660. As far as hotels go, I recommend the University Arms Hotel in the center of town.
Yes. Can you book it for me?
Sure, when would you like that reservation?
i want to book it for 2 people and 2 nights starting from saturday.
Your booking was successful.  Your reference number is FRGZWQL2.  May I help you further?
That is all I need to know. Thanks, good bye. 
Thank you so much for Cambridge TownInfo centre. Have a great day!