user_turns: <SILENCE> i want a restaurant that serves <SILENCE> i want a restaurant that serves cantonese food how about north_american food <SILENCE> north_american north_american food what is the address what is the phone number what is the price range 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 kind of food would you like? api_call R_cuisine R_location R_price la_mimosa is a great restaurant I am sorry but there is no cantonese restaurant that matches your request api_call north_american R_location R_price curry_garden serves indian food . curry_garden is a great restaurant gourmet_burger_kitchen serves north_american food . Sure , gourmet_burger_kitchen is on gourmet_burger_kitchen_address The phone number of gourmet_burger_kitchen is gourmet_burger_kitchen_phone gourmet_burger_kitchen is in the expensive price range  you are welcome