user_turns: <SILENCE> <SILENCE> i dont care portuguese food <SILENCE> anything else is there anything else any price portuguese food any price price range is there anything else 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? What kind of food would you like? api_call portuguese R_location R_price nandos_city_centre serves portuguese food nandos serves portuguese food I am sorry but there is no other portuguese restaurant that matches your request nandos is a great restaurant nandos_city_centre serves portuguese food nandos_city_centre is in the cheap price range I am sorry but there is no other portuguese restaurant that matches your request  you are welcome