user_turns: <SILENCE> im looking for a cheap restaurant in the north of town i dont care <SILENCE> 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 ? There are restaurants in the cheap price range and the north of town . What type of food would you like? api_call R_cuisine north cheap da_vinci_pizzeria is a nice place in the north of town and the prices are cheap The phone number of da_vinci_pizzeria is da_vinci_pizzeria_phone  you are welcome