user_turns: <SILENCE> cheap restaurant in the south part of town <SILENCE> anything else what is the address what type of food is it 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 ? api_call R_cuisine south cheap the_lucky_star is a nice restaurant in the south of town in the cheap price range nandos is a nice restaurant in the south of town in the cheap price range Sure , nandos is on nandos_address nandos serves portuguese food  you are welcome