user_turns: <SILENCE> iam looking serve <SILENCE> i do not care how about portuguese food how about portuguese food <SILENCE> could i have the phone number and address please 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? You are looking for a restaurant serving any kind of food right? What part of town do you have in mind? There are restaurants if you don't care about the area or the type of food . What price range would you like? I'm sorry but there is no restaurant serving bistro food api_call portuguese R_location R_price nandos serves portuguese food The phone number of nandos is nandos_phone  you are welcome