user : hello, i'm looking for a 4 star place on the west side to stay at.\n
system : do you have a price range ?\n
user : yes, i am looking in the expensive price range. also, i need free parking.\n
belief states: west = area, 4 = stars, expensive = price, yes = parking \n
user : i am looking for a train, it should go to cambridge and should depart from norwich.\n
system : what time and day are you looking to travel?\n
user : yes, i would like travel on monday and i would need to arrive by 08:30. \n
belief states: cambridge = destination, norwich = departure, monday = day, 08:30 = arrive \n
user : i would like an expensive place to dine, centre of town.\n
system : what type of food would you like to eat?\n
user : the type of food doesn't matter, but i need a reservation for 8 people on wednesday at 12:45\n
belief states: expensive = price, centre = area, dont care = food, 8 = people, wednesday = day, 12:45 = time \n
user : i need a taxi to pick me up at curry prince at 08:15.\n
belief states: curry prince = departure, 08:15 = leave \n
user : i am looking for a place in the centre of town that is a nightclub.\n
belief states: night club = type, centre = area \n