[example] [user] i would like to find a train. [system] where are you departing from and what is your destination? [user] i'm leaving washington to chicago on march 6th. [system] there are 5 trains. there is one leaving at 9:40 am for $109. [user] i would like to purchase one ticket. flexible ticket, and add travel insurance. [slots] to=chicago date_of_journey=march 6th trip_protection=a of possible values a) true b) false journey_start_time=9:40 am number_of_adults=d of possible values a) 5 b) 2 c) 3 d) 1 e) 4 from=washington class=c of possible values a) value b) business c) flexible [context] [user] i need to find train tickets to anaheim, ca, business class.
State: [state] to=none date_of_journey=none trip_protection=none journey_start_time=none number_of_adults=none from=anaheim, ca class=b

[example] [user] i would like to find a train. [system] where are you departing from and what is your destination? [user] i'm leaving washington to chicago on march 6th. [system] there are 5 trains. there is one leaving at 9:40 am for $109. [user] i would like to purchase one ticket. flexible ticket, and add travel insurance. [slots] from=washington trip_protection=a of possible values a) true b) false journey_start_time=9:40 am class=b of possible values a) value b) flexible c) business to=chicago date_of_journey=march 6th number_of_adults=d of possible values a) 3 b) 4 c) 2 d) 1 e) 5 [context] [user] i need to find train tickets to anaheim, ca, business class. [system] what date would you like to travel, and which city are you going to? [user] i am traveling to sacramento, ca on the 4th of this month.
State: [state] from=anaheim, ca trip_protection=none journey_start_time=none class=c to=sacramento, ca date_of_journey=4th of this month number_of_adults=none

[example] [user] i would like to find a train. [system] where are you departing from and what is your destination? [user] i'm leaving washington to chicago on march 6th. [system] there are 5 trains. there is one leaving at 9:40 am for $109. [user] i would like to purchase one ticket. flexible ticket, and add travel insurance. [slots] date_of_journey=march 6th class=c of possible values a) business b) value c) flexible journey_start_time=9:40 am trip_protection=a of possible values a) true b) false number_of_adults=e of possible values a) 3 b) 5 c) 2 d) 4 e) 1 to=chicago from=washington [context] [user] i need to find train tickets to anaheim, ca, business class. [system] what date would you like to travel, and which city are you going to? [user] i am traveling to sacramento, ca on the 4th of this month. [system] i found 10 train options. one departs at 6:50 am and costs $184 in total. [user] ok, thank you, i'm all set.
State: [state] date_of_journey=4th of this month class=a journey_start_time=6:50 am trip_protection=none number_of_adults=none to=sacramento, ca from=anaheim, ca