inform((_:search,departure,'broxbourne');(_:search,type,'Train'))
user
I 'm looking for a train departing from broxbourne .
request((_:search,destination,?);(_:search,type,'Train'))
system
Where are you headed ?
inform((_:search,destination,'cambridge');(_:search,type,'Train'))
user
I am heading to Cambridge .
inform((_:result,id,'TR5570');(_:result,leave_at,'05:32');(_:result,type,'Train'))
system
How about TR5570 that leaves at 05:32 ?
inform((_:search,arrive_by,'17:15');(_:search,type,'Train'))
user
I will need to arrive by 17:15 .
request((_:search,day,?);(_:search,type,'Train'))
system
What day will you be travelling ?
inform((_:search,day,'wednesday');(_:search,type,'Train'))
user
I will be leaving on Wednesday .
inform((_:result,id,'TR0788');(_:result,leave_at,'05:32');(_:result,type,'Train'))
system
How about the TR0788 train that leaves at 05:32 ?
inform((_:search,arrive_by,'17:15');(_:search,destination,'cambridge');(_:search,type,'Train'))
user
Does that train arrive in Cambridge before 17:15 ?
inform((_:result,arrive_by,'06:32');(_:result,destination,'cambridge');(_:result,id,'TR0788');(_:result,type,'Train'))
system
TR0788 arrives in cambridge by 06:32 .   Would you like me to find something closer to arriving at 17:15 ?
request((_:result,leave_at,?);(_:result,type,'Train'))
user
Yes , and I 'll just need the train i d and departure time .
inform((_:result,arrive_by,'16:32');(_:result,day,'Wednesday');(_:result,departure,'Broxbourne');(_:result,destination,'Cambridge');(_:result,id,'TR5972');(_:result,leave_at,'15:32');(_:result,ticket,'17 pounds 90');(_:result,type,'Train'))
system
TR5972 leaves Broxbourne   Wednesday at 15:32 and arrives in Cambridge at 16:32 , The fare is 17 pounds 90 .
inform((_:search,people,'2');(_:search,type,'Train'))
user
Okay . Would you please book 2 tickets for that one ?
inform((_:booking,category,'Train');(_:booking,ref,'G2JZA2ZE');(_:booking,ticket,'35.79 GBP');(_:booking,type,'Booking'))
system
Booking was successful , the total fee is 35.79 GBP payable at the station . 
 Reference number is : G2JZA2ZE .
thank()
user
I ca n't imagine why I asked you to book passage . I always buy my own tickets . In any case , thanks ever so much .
reqmore()
system
Is there anything else I can help you with today ?
thank()
user
no thanks for your service i enjoyed
system
Have a great day .
_:search departure broxbourne
_:search type Train
_:search departure broxbourne
_:search destination cambridge
_:search type Train
_:search departure broxbourne
_:search destination cambridge
_:result id TR5570
_:result leave_at 05:32
_:result type Train
_:search arrive_by 17:15
_:search type Train
_:search departure broxbourne
_:search destination cambridge
_:result id TR5570
_:result leave_at 05:32
_:result type Train
_:search arrive_by 17:15
_:search day wednesday
_:search type Train
_:search departure broxbourne
_:search day wednesday
_:result id TR0788
_:result leave_at 05:32
_:result type Train
_:search arrive_by 17:15
_:search destination cambridge
_:search type Train
_:search departure broxbourne
_:search day wednesday
_:result leave_at 05:32
_:search arrive_by 17:15
_:search destination cambridge
_:search type Train
_:result arrive_by 06:32
_:result destination cambridge
_:result id TR0788
_:result type Train
_:result leave_at ?
_:search departure broxbourne
_:search day wednesday
_:search arrive_by 17:15
_:search destination cambridge
_:result arrive_by 16:32
_:result day Wednesday
_:result departure Broxbourne
_:result destination Cambridge
_:result id TR5972
_:result leave_at 15:32
_:result ticket 17 pounds 90
_:result type Train
_:search people 2
_:search type Train
_:search departure broxbourne
_:search day wednesday
_:search arrive_by 17:15
_:search destination cambridge
_:result arrive_by 16:32
_:result day Wednesday
_:result departure Broxbourne
_:result destination Cambridge
_:result id TR5972
_:result leave_at 15:32
_:result ticket 17 pounds 90
_:result type Train
_:search people 2
_:search type Train
_:booking category Train
_:booking ref G2JZA2ZE
_:booking ticket 35.79 GBP
_:booking type Booking
_:search departure broxbourne
_:search day wednesday
_:search arrive_by 17:15
_:search destination cambridge
_:result arrive_by 16:32
_:result day Wednesday
_:result departure Broxbourne
_:result destination Cambridge
_:result id TR5972
_:result leave_at 15:32
_:result ticket 17 pounds 90
_:result type Train
_:search people 2
_:search type Train
_:booking category Train
_:booking ref G2JZA2ZE
_:booking ticket 35.79 GBP
_:booking type Booking
_:system inquired _:user