inform((_:search,day,'wednesday');(_:search,departure,'broxbourne');(_:search,type,'Train'))
user
I am looking for a train on Wednesday departing form broxbourne
inform((_:result,amount,'many');(_:result,type,'Train')) request((_:search,destination,?);(_:search,type,'Train'))
system
There are many results . Where is your destination ?
inform((_:search,destination,'cambridge');(_:search,type,'Train'))
user
I 'm heading into Cambridge .
inform((_:result,amount,'a number of');(_:result,type,'Train')) request((_:search,leave_at,?);(_:search,type,'Train'))
system
There are a number of trains to choose from . What time would you like to depart ?
inform((_:search,arrive_by,'21:30');(_:search,destination,'cambridge');(_:search,type,'Train')) request((_:result,leave_at,?);(_:result,type,'Train'))
user
Departure time is flexible but I would need to get into Cambridge by 21:30 .
inform((_:result,arrive_by,'21:30');(_:result,count,'15');(_:result,duration,'1 hour');(_:result,type,'Train')) request((_:search,leave_at,?);(_:search,type,'Train'))
system
There are 15 trains that arrive by 21:30 .   Each train takes 1 hour .   When would you prefer to depart ?
request((_:result,ticket,?);(_:result,type,'Train'))
user
What is the earliest departing train and the price of a ticket for it ?
inform((_:result,leave_at,'05:32');(_:result,ticket,'17.90 pounds');(_:result,type,'Train')) offer((_:booking,category,'Train');(_:booking,type,'Booking'))
system
The earliest train departs at 05:32 and is 17.90 pounds . Would you like a ticket ?
request((_:result,duration,?);(_:result,type,'Train'))
user
That 's okay . No need to book now . But can I get the travel time for that train ?
inform((_:result,duration,'60 minutes');(_:result,type,'Train'))
system
The travel time for the train is 60 minutes .
thank()
user
Okay , thanks !   that 's all I needed !   Have a good day !
system
Glad I could help !
_:search day wednesday
_:search departure broxbourne
_:search type Train
_:search day wednesday
_:search departure broxbourne
_:result amount many
_:result type Train
_:search destination cambridge
_:search type Train
_:search day wednesday
_:search departure broxbourne
_:result amount a number of
_:result type Train
_:search leave_at ?
_:search arrive_by 21:30
_:search destination cambridge
_:search type Train
_:result leave_at ?
_:search day wednesday
_:search departure broxbourne
_:result amount a number of
_:search arrive_by 21:30
_:search destination cambridge
_:result leave_at ?
_:result arrive_by 21:30
_:result count 15
_:result duration 1 hour
_:result type Train
_:search leave_at ?
_:search type Train
_:result ticket ?
_:search day wednesday
_:search departure broxbourne
_:result amount a number of
_:search arrive_by 21:30
_:search destination cambridge
_:result arrive_by 21:30
_:result count 15
_:result duration 1 hour
_:search leave_at ?
_:search type Train
_:result leave_at 05:32
_:result ticket 17.90 pounds
_:result type Train
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:result duration ?
_:search day wednesday
_:search departure broxbourne
_:result amount a number of
_:search arrive_by 21:30
_:search destination cambridge
_:result arrive_by 21:30
_:result count 15
_:search leave_at ?
_:search type Train
_:result leave_at 05:32
_:result ticket 17.90 pounds
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:result duration 60 minutes
_:result type Train