user_turns: <SILENCE> cheap restaurant in the south part of town any <SILENCE> phone number address 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 south cheap the_lucky_star is a nice place in the south of town and the prices are cheap The phone number of the_lucky_star is the_lucky_star_phone Sure , the_lucky_star is on the_lucky_star_address  you are welcome