user_turns: <SILENCE> im looking for an expensive restaurant that serves cantonese food <SILENCE> okay what about north_american food <SILENCE> can i have the phone number can i have the post code 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 ? What part of town do you have in mind? api_call cantonese R_location expensive Sorry there is no cantonese restaurant in the expensive price range api_call north_american R_location expensive gourmet_burger_kitchen is a great restaurant serving north_american food and it is in the expensive price range The phone number of gourmet_burger_kitchen is gourmet_burger_kitchen_phone The post code of gourmet_burger_kitchen is gourmet_burger_kitchen_post_code  you are welcome