[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=a of possible values a) 1 b) 2 c) 3 d) 4 destination=sf departure_date=9th of this month return_date=the 13th origin=seattle seating_class=c of possible values a) business b) premium economy c) economy d) first class airlines=f of possible values a) british airways b) southwest airlines c) air france d) alaska airlines e) american airlines f) delta airlines g) air canada h) united airlines [context] [user] i'm looking for a one way flight on southwest airlines in premium economy class.
State: [state] passengers=none destination=none departure_date=none return_date=none origin=none seating_class=b airlines=b

[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 passengers=b of possible values a) 2 b) 1 c) 4 d) 3 airlines=g of possible values a) alaska airlines b) air canada c) british airways d) air france e) american airlines f) southwest airlines g) delta airlines h) united airlines destination=sf origin=seattle seating_class=a of possible values a) economy b) business c) first class d) premium economy departure_date=9th of this month [context] [user] i'm looking for a one way flight on southwest airlines in premium economy class. [system] what date are you planning this trip for? what city are you currently located in. [user] i'm looking for flight on this sunday from chi-town.
State: [state] return_date=none passengers=none airlines=f destination=none origin=chi-town seating_class=d departure_date=this sunday

[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 passengers=d of possible values a) 4 b) 3 c) 2 d) 1 destination=sf airlines=b of possible values a) air canada b) delta airlines c) southwest airlines d) air france e) american airlines f) alaska airlines g) british airways h) united airlines seating_class=b of possible values a) business b) economy c) first class d) premium economy return_date=the 13th [context] [user] i'm looking for a one way flight on southwest airlines in premium economy class. [system] what date are you planning this trip for? what city are you currently located in. [user] i'm looking for flight on this sunday from chi-town. [system] what is your destination for this flight? [user] i want to fly to washington.
State: [state] departure_date=this sunday origin=chi-town passengers=none destination=washington airlines=c seating_class=d 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] seating_class=a of possible values a) economy b) premium economy c) first class d) business return_date=the 13th origin=seattle departure_date=9th of this month airlines=e of possible values a) southwest airlines b) air canada c) united airlines d) air france e) delta airlines f) british airways g) alaska airlines h) american airlines destination=sf passengers=b of possible values a) 2 b) 1 c) 4 d) 3 [context] [user] i'm looking for a one way flight on southwest airlines in premium economy class. [system] what date are you planning this trip for? what city are you currently located in. [user] i'm looking for flight on this sunday from chi-town. [system] what is your destination for this flight? [user] i want to fly to washington. [system] how does southwest airlines sound? the flight is scheduled for 6:45 am. there is 0 stops on this flight. it costs $169. [user] that sounds good, thank you.
State: [state] seating_class=b return_date=none origin=chi-town departure_date=this sunday airlines=a destination=washington passengers=none