[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] airlines=d of possible values a) air canada b) air france c) alaska airlines d) delta airlines e) southwest airlines f) american airlines g) british airways h) united airlines seating_class=c of possible values a) business b) first class c) economy d) premium economy origin=seattle departure_date=9th of this month return_date=the 13th destination=sf passengers=b of possible values a) 2 b) 1 c) 4 d) 3 [context] [user] i am looking for a round trip flight to ciudad de mexico returning on the 7th.
State: [state] airlines=none seating_class=none origin=none departure_date=none return_date=the 7th destination=ciudad de mexico 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 passengers=c of possible values a) 4 b) 3 c) 1 d) 2 seating_class=b of possible values a) business b) economy c) first class d) premium economy origin=seattle airlines=c of possible values a) united airlines b) american airlines c) delta airlines d) british airways e) southwest airlines f) air france g) alaska airlines h) air canada destination=sf return_date=the 13th [context] [user] i am looking for a round trip flight to ciudad de mexico returning on the 7th. [system] from which city would you like to depart? [user] i would like 4 tickets departing from chi-town.
State: [state] departure_date=none passengers=a seating_class=none origin=chi-town airlines=none destination=ciudad de mexico return_date=the 7th

[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) 3 c) 2 d) 4 return_date=the 13th destination=sf seating_class=c of possible values a) business b) first class c) economy d) premium economy departure_date=9th of this month airlines=g of possible values a) united airlines b) american airlines c) air canada d) southwest airlines e) british airways f) alaska airlines g) delta airlines h) air france origin=seattle [context] [user] i am looking for a round trip flight to ciudad de mexico returning on the 7th. [system] from which city would you like to depart? [user] i would like 4 tickets departing from chi-town. [system] what day would you like to leave? [user] i would like to leave this sunday.
State: [state] passengers=d return_date=the 7th destination=ciudad de mexico seating_class=none departure_date=this sunday airlines=none origin=chi-town

[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=b of possible values a) business b) economy c) premium economy d) first class return_date=the 13th passengers=d of possible values a) 3 b) 2 c) 4 d) 1 departure_date=9th of this month destination=sf origin=seattle airlines=a of possible values a) delta airlines b) southwest airlines c) alaska airlines d) british airways e) united airlines f) american airlines g) air france h) air canada [context] [user] i am looking for a round trip flight to ciudad de mexico returning on the 7th. [system] from which city would you like to depart? [user] i would like 4 tickets departing from chi-town. [system] what day would you like to leave? [user] i would like to leave this sunday. [system] for $312 you can fly with american airlines departing at 12:30 pm with the return flight departing at 8:05 am. [user] what else do you need to know? i would like to fly with united airlines.
State: [state] seating_class=none return_date=the 7th passengers=c departure_date=this sunday destination=ciudad de mexico origin=chi-town airlines=e

[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=b of possible values a) 4 b) 1 c) 2 d) 3 airlines=d of possible values a) british airways b) united airlines c) alaska airlines d) delta airlines e) southwest airlines f) air canada g) air france h) american airlines seating_class=c of possible values a) premium economy b) business c) economy d) first class return_date=the 13th destination=sf departure_date=9th of this month origin=seattle [context] [user] i am looking for a round trip flight to ciudad de mexico returning on the 7th. [system] from which city would you like to depart? [user] i would like 4 tickets departing from chi-town. [system] what day would you like to leave? [user] i would like to leave this sunday. [system] for $312 you can fly with american airlines departing at 12:30 pm with the return flight departing at 8:05 am. [user] what else do you need to know? i would like to fly with united airlines. [system] i found 1 united airlines flight for you. it departs at 12:45 pm and the return flight is at 8:25 am. the total cost is $308. [user] is this classified as an economy or business class ticket? would it be a redeye flight?
State: [state] passengers=a airlines=b seating_class=none return_date=the 7th destination=ciudad de mexico departure_date=this sunday origin=chi-town

[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 seating_class=a of possible values a) economy b) premium economy c) business d) first class departure_date=9th of this month destination=sf origin=seattle airlines=f of possible values a) british airways b) united airlines c) alaska airlines d) air france e) air canada f) delta airlines g) southwest airlines h) american airlines passengers=a of possible values a) 1 b) 2 c) 3 d) 4 [context] [user] i am looking for a round trip flight to ciudad de mexico returning on the 7th. [system] from which city would you like to depart? [user] i would like 4 tickets departing from chi-town. [system] what day would you like to leave? [user] i would like to leave this sunday. [system] for $312 you can fly with american airlines departing at 12:30 pm with the return flight departing at 8:05 am. [user] what else do you need to know? i would like to fly with united airlines. [system] i found 1 united airlines flight for you. it departs at 12:45 pm and the return flight is at 8:25 am. the total cost is $308. [user] is this classified as an economy or business class ticket? would it be a redeye flight? [system] it's an overnight flight in an economy seat. [user] ok, i'd like a one way flight.
State: [state] return_date=the 7th seating_class=none departure_date=this sunday destination=ciudad de mexico origin=chi-town airlines=b passengers=d

[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) first class c) premium economy d) business destination=sf airlines=f of possible values a) southwest airlines b) american airlines c) british airways d) alaska airlines e) air france f) delta airlines g) air canada h) united airlines origin=seattle passengers=b of possible values a) 2 b) 1 c) 3 d) 4 return_date=the 13th departure_date=9th of this month [context] [user] i am looking for a round trip flight to ciudad de mexico returning on the 7th. [system] from which city would you like to depart? [user] i would like 4 tickets departing from chi-town. [system] what day would you like to leave? [user] i would like to leave this sunday. [system] for $312 you can fly with american airlines departing at 12:30 pm with the return flight departing at 8:05 am. [user] what else do you need to know? i would like to fly with united airlines. [system] i found 1 united airlines flight for you. it departs at 12:45 pm and the return flight is at 8:25 am. the total cost is $308. [user] is this classified as an economy or business class ticket? would it be a redeye flight? [system] it's an overnight flight in an economy seat. [user] ok, i'd like a one way flight. [system] i found 1 flight for you with united airlines that departs at 12:45 pm. it has 1 layover stop and costs $287. [user] is this a redeye flight? when does it arrive?
State: [state] seating_class=none destination=ciudad de mexico airlines=h origin=chi-town passengers=d return_date=the 7th 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] origin=seattle destination=sf seating_class=d of possible values a) business b) premium economy c) first class d) economy airlines=h of possible values a) air france b) american airlines c) air canada d) british airways e) united airlines f) southwest airlines g) alaska airlines h) delta airlines return_date=the 13th departure_date=9th of this month passengers=b of possible values a) 3 b) 1 c) 4 d) 2 [context] [user] i am looking for a round trip flight to ciudad de mexico returning on the 7th. [system] from which city would you like to depart? [user] i would like 4 tickets departing from chi-town. [system] what day would you like to leave? [user] i would like to leave this sunday. [system] for $312 you can fly with american airlines departing at 12:30 pm with the return flight departing at 8:05 am. [user] what else do you need to know? i would like to fly with united airlines. [system] i found 1 united airlines flight for you. it departs at 12:45 pm and the return flight is at 8:25 am. the total cost is $308. [user] is this classified as an economy or business class ticket? would it be a redeye flight? [system] it's an overnight flight in an economy seat. [user] ok, i'd like a one way flight. [system] i found 1 flight for you with united airlines that departs at 12:45 pm. it has 1 layover stop and costs $287. [user] is this a redeye flight? when does it arrive? [system] it's an overnight flights arriving at 2:05 am. [user] alright.
State: [state] origin=chi-town destination=ciudad de mexico seating_class=none airlines=e return_date=the 7th departure_date=this sunday passengers=c

[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 return_date=the 13th destination=sf airlines=a of possible values a) delta airlines b) american airlines c) alaska airlines d) southwest airlines e) british airways f) united airlines g) air canada h) air france passengers=c of possible values a) 2 b) 3 c) 1 d) 4 seating_class=b of possible values a) business b) economy c) premium economy d) first class [context] [user] i am looking for a round trip flight to ciudad de mexico returning on the 7th. [system] from which city would you like to depart? [user] i would like 4 tickets departing from chi-town. [system] what day would you like to leave? [user] i would like to leave this sunday. [system] for $312 you can fly with american airlines departing at 12:30 pm with the return flight departing at 8:05 am. [user] what else do you need to know? i would like to fly with united airlines. [system] i found 1 united airlines flight for you. it departs at 12:45 pm and the return flight is at 8:25 am. the total cost is $308. [user] is this classified as an economy or business class ticket? would it be a redeye flight? [system] it's an overnight flight in an economy seat. [user] ok, i'd like a one way flight. [system] i found 1 flight for you with united airlines that departs at 12:45 pm. it has 1 layover stop and costs $287. [user] is this a redeye flight? when does it arrive? [system] it's an overnight flights arriving at 2:05 am. [user] alright. [system] is there anything else i can help you with? [user] no, thank you.
State: [state] departure_date=this sunday origin=chi-town return_date=the 7th destination=ciudad de mexico airlines=f passengers=d seating_class=none