user_turns: <SILENCE> id like a cheap restaurant in the south part of town <SILENCE> what is the address and the telephone number and what type of food do they serve good bye thank you
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 The phone number of nandos is nandos_phone nandos serves portuguese food  you are welcome