[example] [user] i am looking for a flight from seattle that return on the 13th. [system] where are you planning to go? what date would you like to travel? [user] i am flying to sf on the 9th of this month and want one economy class ticket. [system] i found 3 flights for you. would you like to fly with delta airlines? the flight takes off at 6:10 am and returns 8 am. the ticket costs $131. [user] ok. [slots] passengers=d of possible values a) 3 b) 2 c) 4 d) 1 airlines=c of possible values a) air canada b) american airlines c) delta airlines d) united airlines e) alaska airlines f) british airways g) southwest airlines h) air france destination=sf seating_class=c of possible values a) first class b) business c) economy d) premium economy origin=seattle departure_date=9th of this month return_date=the 13th [context] [user] hello, i am looking for a flight.
State: [state] passengers=none airlines=none destination=none seating_class=none origin=none departure_date=none return_date=none

[example] [user] i am looking for a flight from seattle that return on the 13th. [system] where are you planning to go? what date would you like to travel? [user] i am flying to sf on the 9th of this month and want one economy class ticket. [system] i found 3 flights for you. would you like to fly with delta airlines? the flight takes off at 6:10 am and returns 8 am. the ticket costs $131. [user] ok. [slots] return_date=the 13th airlines=d of possible values a) united airlines b) southwest airlines c) british airways d) delta airlines e) alaska airlines f) air france g) air canada h) american airlines origin=seattle departure_date=9th of this month seating_class=d of possible values a) first class b) premium economy c) business d) economy destination=sf passengers=b of possible values a) 2 b) 1 c) 4 d) 3 [context] [user] hello, i am looking for a flight. [system] from where and when would you like to depart? also, where is your intended destination? [user] i am looking for an economy flight from chicago to portland on monday next week.
State: [state] return_date=none airlines=none origin=chicago departure_date=monday next week seating_class=d destination=portland passengers=none

[example] [user] i am looking for a flight from seattle that return on the 13th. [system] where are you planning to go? what date would you like to travel? [user] i am flying to sf on the 9th of this month and want one economy class ticket. [system] i found 3 flights for you. would you like to fly with delta airlines? the flight takes off at 6:10 am and returns 8 am. the ticket costs $131. [user] ok. [slots] departure_date=9th of this month origin=seattle seating_class=c of possible values a) premium economy b) business c) economy d) first class destination=sf airlines=e of possible values a) united airlines b) british airways c) alaska airlines d) air canada e) delta airlines f) air france g) american airlines h) southwest airlines passengers=b of possible values a) 4 b) 1 c) 2 d) 3 return_date=the 13th [context] [user] hello, i am looking for a flight. [system] from where and when would you like to depart? also, where is your intended destination? [user] i am looking for an economy flight from chicago to portland on monday next week. [system] when would you like to return from portland? [user] i will be returning on the 11th. i would also like to purchase four tickets.
State: [state] departure_date=monday next week origin=chicago seating_class=c destination=portland airlines=none passengers=a return_date=the 11th

[example] [user] i am looking for a flight from seattle that return on the 13th. [system] where are you planning to go? what date would you like to travel? [user] i am flying to sf on the 9th of this month and want one economy class ticket. [system] i found 3 flights for you. would you like to fly with delta airlines? the flight takes off at 6:10 am and returns 8 am. the ticket costs $131. [user] ok. [slots] return_date=the 13th departure_date=9th of this month destination=sf origin=seattle seating_class=b of possible values a) premium economy b) economy c) business d) first class passengers=c of possible values a) 4 b) 3 c) 1 d) 2 airlines=c of possible values a) air france b) air canada c) delta airlines d) british airways e) alaska airlines f) american airlines g) united airlines h) southwest airlines [context] [user] hello, i am looking for a flight. [system] from where and when would you like to depart? also, where is your intended destination? [user] i am looking for an economy flight from chicago to portland on monday next week. [system] when would you like to return from portland? [user] i will be returning on the 11th. i would also like to purchase four tickets. [system] there is a flight by southwest airlines which departs at 4:35 am and returns at 3:15 pm. the tickets cost $301, are you interested? [user] yes! thank you very much.
State: [state] return_date=the 11th departure_date=monday next week destination=portland origin=chicago seating_class=b passengers=a airlines=h