user_turns: <SILENCE> id like to find mexican food <SILENCE> what is the price range how about vietnamese how about vietnamese food <SILENCE> what is the food type what is 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 ? What kind of food would you like? api_call mexican R_location R_price chiquito_restaurant_bar serves mexican food chiquito_restaurant_bar is in the expensive price range I'm sorry but there is no restaurant serving cheap mexican food api_call vietnamese R_location R_price the_gardenia is in the cheap price range thanh_binh serves vietnamese food in the cheap price range The phone number of thanh_binh is thanh_binh_phone  you are welcome