user_turns: <SILENCE> breath i would like port portuguese food south west west east centre the centre yes <SILENCE> what is the address thank you goodbye
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 ? There are restaurants serving portuguese food . What area do you want? I'm sorry but there is no portuguese restaurant in the north of town Could you please repeat that? What part of town do you have in mind? I'm sorry but there is no portuguese restaurant in the east of town What part of town do you have in mind? You are looking for a portuguese restaurant right? api_call portuguese north 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