[example] [user] please search flights for me. i m leaving from las vegas on the 6th of this month and coming back on the 9th of this month. [system] where are you going? [user] i am going to sd. there is only 1 in my group. make sure to book only refundable tickets. either business or economy is fine. [system] i found a convenient southwest airlines flight for your trip. it leaves at 3:10 pm and the return flight leaves at 8:25 pm. the ticket price is $95. [user] that flight sounds good to me. [slots] departure_date=6th of this month refundable=a of possible values a) true b) false return_date=9th of this month origin_city=las vegas outbound_departure_time=3:10 pm airlines=c of possible values a) united airlines b) delta airlines c) southwest airlines d) air france e) air canada f) alaska airlines g) british airways h) american airlines seating_class=dontcare of possible values a) first class b) economy c) premium economy d) business inbound_departure_time=8:25 pm passengers=a of possible values a) 1 b) 3 c) 4 d) 2 destination_city=sd [context] [user] hi there! do you know if there are any one way economy flights departing from washington?
State: [state] departure_date=none refundable=none return_date=none origin_city=washington outbound_departure_time=none airlines=none seating_class=b inbound_departure_time=none passengers=none destination_city=none

[example] [user] please search flights for me. i m leaving from las vegas on the 6th of this month and coming back on the 9th of this month. [system] where are you going? [user] i am going to sd. there is only 1 in my group. make sure to book only refundable tickets. either business or economy is fine. [system] i found a convenient southwest airlines flight for your trip. it leaves at 3:10 pm and the return flight leaves at 8:25 pm. the ticket price is $95. [user] that flight sounds good to me. [slots] destination_city=sd refundable=b of possible values a) false b) true passengers=a of possible values a) 1 b) 3 c) 2 d) 4 return_date=9th of this month airlines=b of possible values a) british airways b) southwest airlines c) united airlines d) air canada e) delta airlines f) american airlines g) alaska airlines h) air france origin_city=las vegas seating_class=dontcare of possible values a) premium economy b) business c) first class d) economy inbound_departure_time=8:25 pm outbound_departure_time=3:10 pm departure_date=6th of this month [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march.
State: [state] destination_city=none refundable=none passengers=none return_date=none airlines=none origin_city=washington seating_class=d inbound_departure_time=none outbound_departure_time=none departure_date=11th of march

[example] [user] please search flights for me. i m leaving from las vegas on the 6th of this month and coming back on the 9th of this month. [system] where are you going? [user] i am going to sd. there is only 1 in my group. make sure to book only refundable tickets. either business or economy is fine. [system] i found a convenient southwest airlines flight for your trip. it leaves at 3:10 pm and the return flight leaves at 8:25 pm. the ticket price is $95. [user] that flight sounds good to me. [slots] departure_date=6th of this month return_date=9th of this month origin_city=las vegas refundable=a of possible values a) true b) false seating_class=dontcare of possible values a) premium economy b) business c) economy d) first class outbound_departure_time=3:10 pm inbound_departure_time=8:25 pm passengers=b of possible values a) 3 b) 1 c) 4 d) 2 airlines=e of possible values a) british airways b) united airlines c) air canada d) air france e) southwest airlines f) delta airlines g) american airlines h) alaska airlines destination_city=sd [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday.
State: [state] departure_date=11th of march return_date=none origin_city=washington refundable=none seating_class=c outbound_departure_time=none inbound_departure_time=none passengers=none airlines=none destination_city=philly

[example] [user] please search flights for me. i m leaving from las vegas on the 6th of this month and coming back on the 9th of this month. [system] where are you going? [user] i am going to sd. there is only 1 in my group. make sure to book only refundable tickets. either business or economy is fine. [system] i found a convenient southwest airlines flight for your trip. it leaves at 3:10 pm and the return flight leaves at 8:25 pm. the ticket price is $95. [user] that flight sounds good to me. [slots] seating_class=dontcare of possible values a) first class b) premium economy c) economy d) business origin_city=las vegas inbound_departure_time=8:25 pm refundable=a of possible values a) true b) false passengers=a of possible values a) 1 b) 3 c) 4 d) 2 destination_city=sd return_date=9th of this month outbound_departure_time=3:10 pm departure_date=6th of this month airlines=e of possible values a) united airlines b) alaska airlines c) delta airlines d) air canada e) southwest airlines f) air france g) american airlines h) british airways [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday. [system] i see! would you like an american airlines flight with 1 layover, which departs at 8 am and costs $140? [user] are there any alternative flights available?
State: [state] seating_class=c origin_city=washington inbound_departure_time=none refundable=none passengers=none destination_city=philly return_date=none outbound_departure_time=none departure_date=11th of march airlines=none

[example] [user] please search flights for me. i m leaving from las vegas on the 6th of this month and coming back on the 9th of this month. [system] where are you going? [user] i am going to sd. there is only 1 in my group. make sure to book only refundable tickets. either business or economy is fine. [system] i found a convenient southwest airlines flight for your trip. it leaves at 3:10 pm and the return flight leaves at 8:25 pm. the ticket price is $95. [user] that flight sounds good to me. [slots] seating_class=dontcare of possible values a) business b) economy c) premium economy d) first class destination_city=sd passengers=b of possible values a) 3 b) 1 c) 2 d) 4 refundable=b of possible values a) false b) true outbound_departure_time=3:10 pm departure_date=6th of this month inbound_departure_time=8:25 pm origin_city=las vegas airlines=f of possible values a) united airlines b) air canada c) american airlines d) alaska airlines e) air france f) southwest airlines g) delta airlines h) british airways return_date=9th of this month [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday. [system] i see! would you like an american airlines flight with 1 layover, which departs at 8 am and costs $140? [user] are there any alternative flights available? [system] yes there is, how about a southwest airlines flight with 1 layover and departs at 4:50 pm? this will cost you $137. [user] sure, this sounds great to me!
State: [state] seating_class=b destination_city=philly passengers=none refundable=none outbound_departure_time=4:50 pm departure_date=11th of march inbound_departure_time=none origin_city=washington airlines=f return_date=none

[example] [user] i need help finding a bus to lax. [system] where would you be departing from? [user] i will be leaving from vegas. [system] what day do you plan on leaving? [user] my departure date is the 3rd of this month. i need 3 tickets and prefer economy tickets. [system] i have a bus that leaves at 11:50 am that has economy tickets for $33 each. [user] that one sounds perfect. [slots] departure_time=11:50 am departure_date=3rd of this month fare_type=c of possible values a) flexible b) economy extra c) economy origin=vegas destination=lax group_size=c of possible values a) 2 b) 1 c) 3 d) 4 e) 5 [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday. [system] i see! would you like an american airlines flight with 1 layover, which departs at 8 am and costs $140? [user] are there any alternative flights available? [system] yes there is, how about a southwest airlines flight with 1 layover and departs at 4:50 pm? this will cost you $137. [user] sure, this sounds great to me! [system] would you like to purchase the flight tickets there? [user] perhaps at a later time. could you find buses which travel there too so that i can make a comparison?
State: [state] departure_time=none departure_date=none fare_type=none origin=washington destination=philly group_size=none

[example] [user] please search flights for me. i m leaving from las vegas on the 6th of this month and coming back on the 9th of this month. [system] where are you going? [user] i am going to sd. there is only 1 in my group. make sure to book only refundable tickets. either business or economy is fine. [system] i found a convenient southwest airlines flight for your trip. it leaves at 3:10 pm and the return flight leaves at 8:25 pm. the ticket price is $95. [user] that flight sounds good to me. [slots] seating_class=dontcare of possible values a) economy b) first class c) premium economy d) business passengers=d of possible values a) 4 b) 2 c) 3 d) 1 origin_city=las vegas airlines=h of possible values a) air france b) delta airlines c) united airlines d) air canada e) british airways f) american airlines g) alaska airlines h) southwest airlines destination_city=sd return_date=9th of this month refundable=a of possible values a) true b) false outbound_departure_time=3:10 pm inbound_departure_time=8:25 pm departure_date=6th of this month [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday. [system] i see! would you like an american airlines flight with 1 layover, which departs at 8 am and costs $140? [user] are there any alternative flights available? [system] yes there is, how about a southwest airlines flight with 1 layover and departs at 4:50 pm? this will cost you $137. [user] sure, this sounds great to me! [system] would you like to purchase the flight tickets there? [user] perhaps at a later time. could you find buses which travel there too so that i can make a comparison?
State: [state] seating_class=a passengers=none origin_city=washington airlines=h destination_city=philly return_date=none refundable=none outbound_departure_time=4:50 pm inbound_departure_time=none departure_date=11th of march

[example] [user] i need help finding a bus to lax. [system] where would you be departing from? [user] i will be leaving from vegas. [system] what day do you plan on leaving? [user] my departure date is the 3rd of this month. i need 3 tickets and prefer economy tickets. [system] i have a bus that leaves at 11:50 am that has economy tickets for $33 each. [user] that one sounds perfect. [slots] departure_time=11:50 am destination=lax group_size=a of possible values a) 3 b) 2 c) 1 d) 5 e) 4 origin=vegas departure_date=3rd of this month fare_type=a of possible values a) economy b) economy extra c) flexible [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday. [system] i see! would you like an american airlines flight with 1 layover, which departs at 8 am and costs $140? [user] are there any alternative flights available? [system] yes there is, how about a southwest airlines flight with 1 layover and departs at 4:50 pm? this will cost you $137. [user] sure, this sounds great to me! [system] would you like to purchase the flight tickets there? [user] perhaps at a later time. could you find buses which travel there too so that i can make a comparison? [system] sure, will you be departing on march 11th? [user] no, i intend to depart on sunday this week.
State: [state] departure_time=none destination=philly group_size=none origin=washington departure_date=sunday this week fare_type=none

[example] [user] i need help finding a bus to lax. [system] where would you be departing from? [user] i will be leaving from vegas. [system] what day do you plan on leaving? [user] my departure date is the 3rd of this month. i need 3 tickets and prefer economy tickets. [system] i have a bus that leaves at 11:50 am that has economy tickets for $33 each. [user] that one sounds perfect. [slots] departure_time=11:50 am group_size=d of possible values a) 5 b) 2 c) 1 d) 3 e) 4 origin=vegas destination=lax fare_type=c of possible values a) economy extra b) flexible c) economy departure_date=3rd of this month [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday. [system] i see! would you like an american airlines flight with 1 layover, which departs at 8 am and costs $140? [user] are there any alternative flights available? [system] yes there is, how about a southwest airlines flight with 1 layover and departs at 4:50 pm? this will cost you $137. [user] sure, this sounds great to me! [system] would you like to purchase the flight tickets there? [user] perhaps at a later time. could you find buses which travel there too so that i can make a comparison? [system] sure, will you be departing on march 11th? [user] no, i intend to depart on sunday this week. [system] there are 8 buses which you might like, one of which is an economy bus ride departing at 7:10 am costing $33. [user] are there any alternatives? how about i depart next tuesday instead?
State: [state] departure_time=none group_size=none origin=washington destination=philly fare_type=none departure_date=next tuesday

[example] [user] i need help finding a bus to lax. [system] where would you be departing from? [user] i will be leaving from vegas. [system] what day do you plan on leaving? [user] my departure date is the 3rd of this month. i need 3 tickets and prefer economy tickets. [system] i have a bus that leaves at 11:50 am that has economy tickets for $33 each. [user] that one sounds perfect. [slots] departure_time=11:50 am origin=vegas departure_date=3rd of this month fare_type=b of possible values a) flexible b) economy c) economy extra group_size=c of possible values a) 4 b) 1 c) 3 d) 5 e) 2 destination=lax [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday. [system] i see! would you like an american airlines flight with 1 layover, which departs at 8 am and costs $140? [user] are there any alternative flights available? [system] yes there is, how about a southwest airlines flight with 1 layover and departs at 4:50 pm? this will cost you $137. [user] sure, this sounds great to me! [system] would you like to purchase the flight tickets there? [user] perhaps at a later time. could you find buses which travel there too so that i can make a comparison? [system] sure, will you be departing on march 11th? [user] no, i intend to depart on sunday this week. [system] there are 8 buses which you might like, one of which is an economy bus ride departing at 7:10 am costing $33. [user] are there any alternatives? how about i depart next tuesday instead? [system] there are 7 buses available, would you like an economy ride which departs at 7:50 am which costs $31? [user] may i know which station does this bus arrive at?
State: [state] departure_time=none origin=washington departure_date=next tuesday fare_type=none group_size=none destination=philly

[example] [user] i need help finding a bus to lax. [system] where would you be departing from? [user] i will be leaving from vegas. [system] what day do you plan on leaving? [user] my departure date is the 3rd of this month. i need 3 tickets and prefer economy tickets. [system] i have a bus that leaves at 11:50 am that has economy tickets for $33 each. [user] that one sounds perfect. [slots] destination=lax origin=vegas departure_date=3rd of this month fare_type=c of possible values a) economy extra b) flexible c) economy group_size=e of possible values a) 1 b) 4 c) 5 d) 2 e) 3 departure_time=11:50 am [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday. [system] i see! would you like an american airlines flight with 1 layover, which departs at 8 am and costs $140? [user] are there any alternative flights available? [system] yes there is, how about a southwest airlines flight with 1 layover and departs at 4:50 pm? this will cost you $137. [user] sure, this sounds great to me! [system] would you like to purchase the flight tickets there? [user] perhaps at a later time. could you find buses which travel there too so that i can make a comparison? [system] sure, will you be departing on march 11th? [user] no, i intend to depart on sunday this week. [system] there are 8 buses which you might like, one of which is an economy bus ride departing at 7:10 am costing $33. [user] are there any alternatives? how about i depart next tuesday instead? [system] there are 7 buses available, would you like an economy ride which departs at 7:50 am which costs $31? [user] may i know which station does this bus arrive at? [system] you will be arriving at intercity terminal. [user] and which station will i be departing from?
State: [state] destination=philly origin=washington departure_date=next tuesday fare_type=none group_size=none departure_time=none

[example] [user] i need help finding a bus to lax. [system] where would you be departing from? [user] i will be leaving from vegas. [system] what day do you plan on leaving? [user] my departure date is the 3rd of this month. i need 3 tickets and prefer economy tickets. [system] i have a bus that leaves at 11:50 am that has economy tickets for $33 each. [user] that one sounds perfect. [slots] origin=vegas destination=lax departure_time=11:50 am group_size=d of possible values a) 4 b) 2 c) 5 d) 3 e) 1 departure_date=3rd of this month fare_type=b of possible values a) economy extra b) economy c) flexible [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday. [system] i see! would you like an american airlines flight with 1 layover, which departs at 8 am and costs $140? [user] are there any alternative flights available? [system] yes there is, how about a southwest airlines flight with 1 layover and departs at 4:50 pm? this will cost you $137. [user] sure, this sounds great to me! [system] would you like to purchase the flight tickets there? [user] perhaps at a later time. could you find buses which travel there too so that i can make a comparison? [system] sure, will you be departing on march 11th? [user] no, i intend to depart on sunday this week. [system] there are 8 buses which you might like, one of which is an economy bus ride departing at 7:10 am costing $33. [user] are there any alternatives? how about i depart next tuesday instead? [system] there are 7 buses available, would you like an economy ride which departs at 7:50 am which costs $31? [user] may i know which station does this bus arrive at? [system] you will be arriving at intercity terminal. [user] and which station will i be departing from? [system] you will be departing from union station. [user] i see, i've decided to go with the flight, could you make a reservation for the flight instead?
State: [state] origin=washington destination=philly departure_time=7:50 am group_size=none departure_date=next tuesday fare_type=b

[example] [user] please search flights for me. i m leaving from las vegas on the 6th of this month and coming back on the 9th of this month. [system] where are you going? [user] i am going to sd. there is only 1 in my group. make sure to book only refundable tickets. either business or economy is fine. [system] i found a convenient southwest airlines flight for your trip. it leaves at 3:10 pm and the return flight leaves at 8:25 pm. the ticket price is $95. [user] that flight sounds good to me. [slots] destination_city=sd return_date=9th of this month refundable=a of possible values a) true b) false outbound_departure_time=3:10 pm origin_city=las vegas passengers=b of possible values a) 4 b) 1 c) 2 d) 3 airlines=h of possible values a) american airlines b) british airways c) air france d) alaska airlines e) delta airlines f) air canada g) united airlines h) southwest airlines departure_date=6th of this month inbound_departure_time=8:25 pm seating_class=dontcare of possible values a) premium economy b) first class c) economy d) business [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday. [system] i see! would you like an american airlines flight with 1 layover, which departs at 8 am and costs $140? [user] are there any alternative flights available? [system] yes there is, how about a southwest airlines flight with 1 layover and departs at 4:50 pm? this will cost you $137. [user] sure, this sounds great to me! [system] would you like to purchase the flight tickets there? [user] perhaps at a later time. could you find buses which travel there too so that i can make a comparison? [system] sure, will you be departing on march 11th? [user] no, i intend to depart on sunday this week. [system] there are 8 buses which you might like, one of which is an economy bus ride departing at 7:10 am costing $33. [user] are there any alternatives? how about i depart next tuesday instead? [system] there are 7 buses available, would you like an economy ride which departs at 7:50 am which costs $31? [user] may i know which station does this bus arrive at? [system] you will be arriving at intercity terminal. [user] and which station will i be departing from? [system] you will be departing from union station. [user] i see, i've decided to go with the flight, could you make a reservation for the flight instead?
State: [state] destination_city=philly return_date=none refundable=none outbound_departure_time=4:50 pm origin_city=washington passengers=none airlines=h departure_date=11th of march inbound_departure_time=none seating_class=c

[example] [user] please search flights for me. i m leaving from las vegas on the 6th of this month and coming back on the 9th of this month. [system] where are you going? [user] i am going to sd. there is only 1 in my group. make sure to book only refundable tickets. either business or economy is fine. [system] i found a convenient southwest airlines flight for your trip. it leaves at 3:10 pm and the return flight leaves at 8:25 pm. the ticket price is $95. [user] that flight sounds good to me. [slots] destination_city=sd refundable=a of possible values a) true b) false inbound_departure_time=8:25 pm outbound_departure_time=3:10 pm origin_city=las vegas passengers=b of possible values a) 3 b) 1 c) 2 d) 4 return_date=9th of this month departure_date=6th of this month seating_class=dontcare of possible values a) first class b) premium economy c) economy d) business airlines=c of possible values a) american airlines b) air canada c) southwest airlines d) delta airlines e) air france f) british airways g) alaska airlines h) united airlines [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday. [system] i see! would you like an american airlines flight with 1 layover, which departs at 8 am and costs $140? [user] are there any alternative flights available? [system] yes there is, how about a southwest airlines flight with 1 layover and departs at 4:50 pm? this will cost you $137. [user] sure, this sounds great to me! [system] would you like to purchase the flight tickets there? [user] perhaps at a later time. could you find buses which travel there too so that i can make a comparison? [system] sure, will you be departing on march 11th? [user] no, i intend to depart on sunday this week. [system] there are 8 buses which you might like, one of which is an economy bus ride departing at 7:10 am costing $33. [user] are there any alternatives? how about i depart next tuesday instead? [system] there are 7 buses available, would you like an economy ride which departs at 7:50 am which costs $31? [user] may i know which station does this bus arrive at? [system] you will be arriving at intercity terminal. [user] and which station will i be departing from? [system] you will be departing from union station. [user] i see, i've decided to go with the flight, could you make a reservation for the flight instead? [system] sure, please confirm your reservation for 1 economy class seat on the southwest airlines flight from washington to philadelphia on march 11th. [user] that is perfect. do you know which airport does the flight arrive at and what time does it arrive there?
State: [state] destination_city=philadelphia refundable=none inbound_departure_time=none outbound_departure_time=4:50 pm origin_city=washington passengers=b return_date=none departure_date=11th of march seating_class=c airlines=c

[example] [user] please search flights for me. i m leaving from las vegas on the 6th of this month and coming back on the 9th of this month. [system] where are you going? [user] i am going to sd. there is only 1 in my group. make sure to book only refundable tickets. either business or economy is fine. [system] i found a convenient southwest airlines flight for your trip. it leaves at 3:10 pm and the return flight leaves at 8:25 pm. the ticket price is $95. [user] that flight sounds good to me. [slots] seating_class=dontcare of possible values a) premium economy b) economy c) business d) first class departure_date=6th of this month airlines=h of possible values a) air canada b) american airlines c) united airlines d) alaska airlines e) delta airlines f) british airways g) air france h) southwest airlines passengers=c of possible values a) 2 b) 4 c) 1 d) 3 inbound_departure_time=8:25 pm outbound_departure_time=3:10 pm destination_city=sd return_date=9th of this month origin_city=las vegas refundable=b of possible values a) false b) true [context] [user] hi there! do you know if there are any one way economy flights departing from washington? [system] when do you plan to depart? [user] i will likely depart on the 11th of march. [system] and where do you plan to visit? [user] i will be travelling to a short trip to philly for a holiday. [system] i see! would you like an american airlines flight with 1 layover, which departs at 8 am and costs $140? [user] are there any alternative flights available? [system] yes there is, how about a southwest airlines flight with 1 layover and departs at 4:50 pm? this will cost you $137. [user] sure, this sounds great to me! [system] would you like to purchase the flight tickets there? [user] perhaps at a later time. could you find buses which travel there too so that i can make a comparison? [system] sure, will you be departing on march 11th? [user] no, i intend to depart on sunday this week. [system] there are 8 buses which you might like, one of which is an economy bus ride departing at 7:10 am costing $33. [user] are there any alternatives? how about i depart next tuesday instead? [system] there are 7 buses available, would you like an economy ride which departs at 7:50 am which costs $31? [user] may i know which station does this bus arrive at? [system] you will be arriving at intercity terminal. [user] and which station will i be departing from? [system] you will be departing from union station. [user] i see, i've decided to go with the flight, could you make a reservation for the flight instead? [system] sure, please confirm your reservation for 1 economy class seat on the southwest airlines flight from washington to philadelphia on march 11th. [user] that is perfect. do you know which airport does the flight arrive at and what time does it arrive there? [system] your reservation has been made. your flight will arrive at phl international airport at 7:46 pm. [user] thanks a bunch! that is all i need.
State: [state] seating_class=b departure_date=11th of march airlines=h passengers=c inbound_departure_time=none outbound_departure_time=4:50 pm destination_city=philadelphia return_date=none origin_city=washington refundable=none