I am looking for a restaurant in the south part of town that is in the cheap price range.
I have two restaurants that meet your requirements.  Do you have a cuisine preference? 
I would like Italian food.
I'm sorry, there are no restaurants matching your request.  Would you like to try something else? 
I don't care. 
Nandos is cheap restaurant in the south part of town serving Portuguese food. Would you like their phone number?
Yes, also I will need their address.
Their address is Cambridge Leisure Park Clifton Way.  Would you also like the phone number?
Yes, please give me their number.
The phone number for Nandos is 01223 327908. Is there anything else I can help you with? 
No, thanks.  I'll head to Nandos now.  Goodbye.
Have a nice day!