inform((_:search,arrive_by,'14:00');(_:search,departure,'london liverpool street');(_:search,type,'Train'))
user
Hi . I 'm looking for a train coming from london liverpool street and arriving by 14:00 .
request((_:search,day,?);(_:search,type,'Train'))
system
What day will you be traveling on ?
inform((_:search,day,'thursday');(_:search,type,'Train'))
user
I 'll be travelling on Thursday .
inform((_:result,leave_at,'5:39');(_:result,type,'Train'))
system
There is a train that leaves at 5:39 .
inform((_:search,people,'one');(_:search,type,'Train'))
user
That sounds great .   Can I book one seat for that train ?
reqmore() inform((_:booking,category,'Train');(_:booking,ref,'RQWKODYJ');(_:booking,ticket,'16.6 GBP');(_:booking,type,'Booking'))
system
Your booking was successful , the total fee is 16.6 GBP payable at the station . 
 Reference number is : RQWKODYJ .   Is there anything else I can do to assist ?
inform((_:search,name,'downing college');(_:search,type,'Attraction'))
user
I 'm also looking for information on a attraction called downing college .
reqmore() inform((_:result,address,'Regent Street');(_:result,area,'centre');(_:result,entrance_fee,'free');(_:result,name,'Downing College');(_:result,type,'Attraction'))
system
Oh yes , Downing College . It is located in the centre of town on Regent Street and It is free to visit . Is there anything else I can help with ?
request((_:result,phone,?);(_:result,type,'Attraction'))
user
I need their phone number .
reqmore() inform((_:result,phone,'01223334860');(_:result,type,'Attraction'))
system
That phone number is 01223334860 .   Is there anything else I can help you with today ?
thank()
user
No thanks . That is all I need . Goodbye .
system
Thank you for using our service today .
_:search arrive_by 14:00
_:search departure london liverpool street
_:search type Train
_:search arrive_by 14:00
_:search departure london liverpool street
_:search day thursday
_:search type Train
_:search arrive_by 14:00
_:search departure london liverpool street
_:search day thursday
_:result leave_at 5:39
_:result type Train
_:search people one
_:search type Train
_:search arrive_by 14:00
_:search departure london liverpool street
_:search day thursday
_:result leave_at 5:39
_:result type Train
_:search people one
_:system inquired _:user
_:booking category Train
_:booking ref RQWKODYJ
_:booking ticket 16.6 GBP
_:booking type Booking
_:search name downing college
_:search type Attraction
_:search arrive_by 14:00
_:search departure london liverpool street
_:search day thursday
_:result leave_at 5:39
_:search people one
_:booking category Train
_:booking ref RQWKODYJ
_:booking ticket 16.6 GBP
_:booking type Booking
_:search name downing college
_:search type Attraction
_:system inquired _:user
_:result address Regent Street
_:result area centre
_:result entrance_fee free
_:result name Downing College
_:result type Attraction
_:result phone ?
_:search arrive_by 14:00
_:search departure london liverpool street
_:search day thursday
_:result leave_at 5:39
_:search people one
_:booking category Train
_:booking ref RQWKODYJ
_:booking ticket 16.6 GBP
_:booking type Booking
_:search name downing college
_:search type Attraction
_:result address Regent Street
_:result area centre
_:result entrance_fee free
_:result name Downing College
_:system inquired _:user
_:result phone 01223334860
_:result type Attraction