user_turns: <SILENCE> i want a cheap restaurant in the south part of town <SILENCE> whats the address 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 ? api_call R_cuisine R_location cheap nandos is a nice restaurant in the south of town in the cheap price range Sure , nandos is on nandos_address  you are welcome