user_turns: <SILENCE> i want to find a restaurant in the south part of town how about portuguese how about portuguese food <SILENCE> may i have the phone number and 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? I'm sorry but there is no restaurant serving polynesian food api_call portuguese R_location R_price nandos is a nice place in the south of town serving tasty portuguese food The phone number of nandos is nandos_phone  you are welcome