user_turns: <SILENCE> <SILENCE> cheap <SILENCE> cheap <SILENCE> south address south phone number address <SILENCE> 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 ? Would you like something in the cheap , moderate , or expensive price range? api_call R_cuisine R_location cheap saigon_city is a great restaurant api_call R_cuisine south cheap royal_spice is a nice restaurant in the north of town in the cheap price range the_lucky_star is a nice restaurant in the south of town in the cheap price range rice_house is a nice restaurant in the centre of town in the cheap price range nandos is a nice restaurant in the south of town in the cheap price range The phone number of nandos is nandos_phone Sure , nandos is on nandos_address nandos is a nice restaurant in the south of town in the cheap price range  you are welcome