user_turns: <SILENCE> i want to find a restaurant in the center and it should serve corsica food <SILENCE> how about north_american how about north_american type of food <SILENCE> how about north_american type of food whats the 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 ? api_call corsica R_location R_price Sorry there is no corsica restaurant in the centre of town You are looking for a restaurant is that right? api_call north_american R_location R_price Sorry there is no corsica restaurant in the centre of town gourmet_burger_kitchen is a nice restaurant in the centre of town serving north_american food The phone number of gourmet_burger_kitchen is gourmet_burger_kitchen_phone  you are welcome