user_turns: <SILENCE> thai food any thai <SILENCE> address thank you goodbye
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? What kind of food would you like? api_call thai R_location R_price bangkok_city serves thai food Sure , bangkok_city is on bangkok_city_address  you are welcome