user_turns: <SILENCE> expensive restaurant welsh food british british food expensive restaurant <SILENCE> phone number phone number thank you good bye
system_turns: Hello , welcome to the Cambridge restaurant system . You can ask for restaurants by area , price range or food type . How may I help you ? I'm sorry but there is no restaurant serving welsh food You are looking for a polish restaurant right? What part of town do you have in mind? api_call british R_location expensive grafton_hotel_restaurant serves british food in the expensive price range grafton_hotel_restaurant is a great restaurant The phone number of grafton_hotel_restaurant is grafton_hotel_restaurant_phone  you are welcome