user_turns: <SILENCE> <SILENCE> doesnt matter <SILENCE> caribbean food portuguese food <SILENCE> phone number 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 part of town do you have in mind? api_call R_cuisine R_location R_price pizza_express Fen Ditton is in the centre part of town . I am sorry but there is no caribbean restaurant that matches your request api_call portuguese R_location R_price nandos is a nice restaurant in the south of town serving portuguese food The phone number of nandos is nandos_phone Sure , nandos is on nandos_address  you are welcome