user_turns: <SILENCE> i want to find a restaurant in the west part of town that serves english food how about vietnamese type of food vietnamese type of food yes i dont care <SILENCE> does it serve vietnamese type of food <SILENCE> i want to find a restaurant in the west part of town that serves vietnamese food what is the phone number what type of food does it serve is there a restaurant in the west part of town that serves vietnamese food 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 ? I'm sorry but there is no restaurant serving english food You are looking for a restaurant serving any kind of food right? Did you say you are looking for a restaurant in the west of town? Would you like something in the cheap , moderate , or expensive price range? api_call R_cuisine west R_price la_margherita is a nice place in the west of town api_call R_cuisine west R_price la_margherita is a great restaurant la_margherita is a nice place in the west of town The phone number of la_margherita is la_margherita_phone la_margherita serves italian food la_margherita is a nice place in the west of town  you are welcome