user_turns: <SILENCE> cheap restaurant any kind north part of town cheap <SILENCE> anything else address phone number 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 kind of food would you like? There are restaurants if you don't care about the food . What area do you want? There are restaurants in the north of town serving any kind of food . What price range 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 royal_spice is a nice place in the north of town and the prices are cheap Sure , royal_spice is on royal_spice_address The phone number of royal_spice is royal_spice_phone  you are welcome