user_turns: <SILENCE> restaurant in the south part of town portuguese <SILENCE> what is the address 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 kind of food would you like? api_call portuguese south R_price nandos_city_centre is a nice place in the centre of town serving tasty portuguese food Sure , nandos_city_centre is on nandos_city_centre_address  you are welcome