user_turns: <SILENCE> north part of town north cheap <SILENCE> phone number food 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 part of town do you have in mind? Would you like something in the cheap , moderate , or expensive price range? api_call R_cuisine north cheap royal_spice is a nice restaurant in the north of town in the cheap price range The phone number of royal_spice is royal_spice_phone royal_spice is a nice restaurant in the north of town in the cheap price range  you are welcome