inform((_:search,departure,'cambridge');(_:search,leave_at,'9:15');(_:search,type,'Train'))
user
I need to book a train departing from Cambridge after 9:15 .
request((_:search,destination,?);(_:search,type,'Train'))
system
Where are you heading to ?
inform((_:search,day,'wednesday');(_:search,destination,'stevenage');(_:search,type,'Train'))
user
I am going to Stevenage , on Wednesday .
inform((_:result,leave_at,'9:21');(_:result,type,'Train')) offer((_:booking,category,'Train');(_:booking,type,'Booking'))
system
I was able to find a train for you at 9:21 . Would you like me to book it for you ?
request((_:result,ticket,?);(_:result,type,'Train'))
user
Could you tell me what the price of this trip is ?
inform((_:result,ticket,'12.80 pounds');(_:result,type,'Train')) reqmore()
system
It should cost around 12.80 pounds .   Anything else ?
request((_:result,arrive_by,?);(_:result,id,?);(_:result,type,'Train'))
user
Yes , what 's the train ID and what time does it arrive ?
inform((_:result,arrive_by,'10:10');(_:result,id,'TR8913');(_:result,type,'Train'))
system
TR8913 will arrive by 10:10 .
user
Great . That is all I need .
system
Okay . Glad I could be of assistance .
_:search departure cambridge
_:search leave_at 9:15
_:search type Train
_:search departure cambridge
_:search leave_at 9:15
_:search day wednesday
_:search destination stevenage
_:search type Train
_:search departure cambridge
_:search leave_at 9:15
_:search day wednesday
_:search destination stevenage
_:search type Train
_:result leave_at 9:21
_:result type Train
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:result ticket ?
_:search departure cambridge
_:search leave_at 9:15
_:search day wednesday
_:search destination stevenage
_:search type Train
_:result leave_at 9:21
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:result ticket 12.80 pounds
_:result type Train
_:system inquired _:user
_:result arrive_by ?
_:result id ?
_:search departure cambridge
_:search leave_at 9:15
_:search day wednesday
_:search destination stevenage
_:search type Train
_:result leave_at 9:21
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:result ticket 12.80 pounds
_:system inquired _:user
_:result arrive_by 10:10
_:result id TR8913
_:result type Train