[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] class=c of possible values a) value b) business c) flexible from=washington date_of_journey=march 6th to=chicago number_of_adults=e of possible values a) 2 b) 3 c) 5 d) 4 e) 1 trip_protection=b of possible values a) false b) true journey_start_time=9:40 am [context] [user] would you look for a train for me?
State: [state] class=none from=none date_of_journey=none to=none number_of_adults=none trip_protection=none journey_start_time=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] trip_protection=a of possible values a) true b) false number_of_adults=d of possible values a) 3 b) 2 c) 4 d) 1 e) 5 to=chicago journey_start_time=9:40 am date_of_journey=march 6th class=a of possible values a) flexible b) business c) value from=washington [context] [user] would you look for a train for me? [system] what city will you leave from and which city are you going to? when will you travel? [user] i'd like to find tickets on march 11th leaving from sacramento and arriving in fresno, ca.
State: [state] trip_protection=none number_of_adults=none to=fresno, ca journey_start_time=none date_of_journey=march 11th class=none from=sacramento

[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 date_of_journey=march 6th number_of_adults=b of possible values a) 2 b) 1 c) 3 d) 4 e) 5 to=chicago journey_start_time=9:40 am trip_protection=b of possible values a) false b) true class=c of possible values a) business b) value c) flexible [context] [user] would you look for a train for me? [system] what city will you leave from and which city are you going to? when will you travel? [user] i'd like to find tickets on march 11th leaving from sacramento and arriving in fresno, ca. [system] i have 7 possibilities. how about one that is $64 in total and leaves at 8 am? [user] do you have anything else?
State: [state] from=sacramento date_of_journey=march 11th number_of_adults=none to=fresno, ca journey_start_time=none trip_protection=none class=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] number_of_adults=a of possible values a) 1 b) 4 c) 5 d) 3 e) 2 date_of_journey=march 6th from=washington trip_protection=b of possible values a) false b) true journey_start_time=9:40 am to=chicago class=c of possible values a) value b) business c) flexible [context] [user] would you look for a train for me? [system] what city will you leave from and which city are you going to? when will you travel? [user] i'd like to find tickets on march 11th leaving from sacramento and arriving in fresno, ca. [system] i have 7 possibilities. how about one that is $64 in total and leaves at 8 am? [user] do you have anything else? [system] how about one that is $66 in total and leaves at 8:40 am? [user] what station does it depart from?
State: [state] number_of_adults=none date_of_journey=march 11th from=sacramento trip_protection=none journey_start_time=none to=fresno, ca class=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] class=a of possible values a) flexible b) value c) business date_of_journey=march 6th trip_protection=b of possible values a) false b) true from=washington journey_start_time=9:40 am number_of_adults=a of possible values a) 1 b) 5 c) 3 d) 2 e) 4 to=chicago [context] [user] would you look for a train for me? [system] what city will you leave from and which city are you going to? when will you travel? [user] i'd like to find tickets on march 11th leaving from sacramento and arriving in fresno, ca. [system] i have 7 possibilities. how about one that is $64 in total and leaves at 8 am? [user] do you have anything else? [system] how about one that is $66 in total and leaves at 8:40 am? [user] what station does it depart from? [system] the train leaves from sacramento valley station. [user] sounds good to me.
State: [state] class=none date_of_journey=march 11th trip_protection=none from=sacramento journey_start_time=8:40 am number_of_adults=none to=fresno, ca

[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] number_of_adults=b of possible values a) 2 b) 1 c) 3 d) 5 e) 4 from=washington to=chicago class=b of possible values a) business b) flexible c) value date_of_journey=march 6th trip_protection=a of possible values a) true b) false journey_start_time=9:40 am [context] [user] would you look for a train for me? [system] what city will you leave from and which city are you going to? when will you travel? [user] i'd like to find tickets on march 11th leaving from sacramento and arriving in fresno, ca. [system] i have 7 possibilities. how about one that is $64 in total and leaves at 8 am? [user] do you have anything else? [system] how about one that is $66 in total and leaves at 8:40 am? [user] what station does it depart from? [system] the train leaves from sacramento valley station. [user] sounds good to me. [system] would you like me to book tickets? [user] no, i don't want to make the booking.
State: [state] number_of_adults=none from=sacramento to=fresno, ca class=none date_of_journey=march 11th trip_protection=none journey_start_time=8:40 am