[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=d of possible values a) 4 b) 3 c) 5 d) 1 e) 2 journey_start_time=9:40 am class=a of possible values a) flexible b) value c) business trip_protection=b of possible values a) false b) true date_of_journey=march 6th to=chicago from=washington [context] [user] i'm looking for fully refundable train tickets departing from la.
State: [state] number_of_adults=none journey_start_time=none class=a trip_protection=none date_of_journey=none to=none from=la

[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 to=chicago class=c of possible values a) value b) business c) flexible date_of_journey=march 6th from=washington number_of_adults=c of possible values a) 3 b) 5 c) 1 d) 2 e) 4 journey_start_time=9:40 am [context] [user] i'm looking for fully refundable train tickets departing from la. [system] what date are you leaving and where are you traveling to? [user] i need 1 ticket going to san diego and i want to depart on march 8th.
State: [state] trip_protection=none to=san diego class=c date_of_journey=march 8th from=la number_of_adults=c 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] class=c of possible values a) business b) value c) flexible trip_protection=b of possible values a) false b) true date_of_journey=march 6th to=chicago journey_start_time=9:40 am number_of_adults=a of possible values a) 1 b) 2 c) 3 d) 5 e) 4 from=washington [context] [user] i'm looking for fully refundable train tickets departing from la. [system] what date are you leaving and where are you traveling to? [user] i need 1 ticket going to san diego and i want to depart on march 8th. [system] i found 10 trains for you. there is a train departing at 6:50 am for $77. [user] that sounds good.
State: [state] class=c trip_protection=none date_of_journey=march 8th to=san diego journey_start_time=6:50 am number_of_adults=a from=la

[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=b of possible values a) false b) true to=chicago number_of_adults=d of possible values a) 3 b) 2 c) 4 d) 1 e) 5 class=c of possible values a) business b) value c) flexible journey_start_time=9:40 am date_of_journey=march 6th from=washington [context] [user] i'm looking for fully refundable train tickets departing from la. [system] what date are you leaving and where are you traveling to? [user] i need 1 ticket going to san diego and i want to depart on march 8th. [system] i found 10 trains for you. there is a train departing at 6:50 am for $77. [user] that sounds good. [system] would you like to purchase the ticket now? [user] no, not right now. that is all i needed.
State: [state] trip_protection=none to=san diego number_of_adults=d class=c journey_start_time=6:50 am date_of_journey=march 8th from=la