user_turns: <SILENCE> im looking for a restaurant that serves bistro food in the center of <SILENCE> um how about thai food <SILENCE> may i get the address and restaurant and a phone number please and what is the address please 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 ? api_call bistro R_location R_price Sorry there is no bistro restaurant in the centre of town api_call thai R_location R_price bangkok_city is a nice restaurant in the centre of town serving thai food Sure , bangkok_city is on bangkok_city_address The phone number of bangkok_city is bangkok_city_phone Sure , bangkok_city is on bangkok_city_address  you are welcome