user_turns: <SILENCE> no there is no such venue how about portuguese type of food no there is no such venue how about portuguese food portuguese <SILENCE> may i have the address of the venue 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 ? I'm sorry but there is no restaurant serving romanian food Sorry would you like romanian or portuguese food? api_call portuguese R_location R_price nandos serves portuguese food in the cheap price range Sure , nandos is on nandos_address  you are welcome