user_turns: <SILENCE> what about north_american food north_american food what about north_american food <SILENCE> what is the phone numbere what is the post code bye thank you good bye thank you good bye 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 expensive portuguese food Could you please repeat that? api_call north_american R_location R_price gourmet_burger_kitchen serves north_american food 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 I am sorry but there is no other north_american restaurant in the expensive price range gourmet_burger_kitchen serves north_american food in the expensive price range Can I help you with anything else?  you are welcome