inform((_:search,category,'colleges');(_:search,type,'Attraction'))
user
I 'm interested in visiting colleges while in town , can you please recommend some ?
inform((_:result,name,"christ 's college");(_:result,name,'clare hall');(_:result,type,'Attraction'))
system
I can recommend clare hall and christ 's college .   You need phone numbers for either one ?
inform((_:search,name,'clare hall');(_:search,type,'Attraction')) request((_:result,postcode,?);(_:result,type,'Attraction'))
user
I would like the post code for clare hall please .
reqmore() inform((_:result,postcode,'cb39al');(_:result,type,'Attraction'))
system
Sure , that post code is cb39al . Can I further assist you ?
inform((_:search,day,'sunday');(_:search,destination,'stansted airport');(_:search,type,'Train'))
user
Yes I also need a train to stansted airport on sunday
request((_:search,departure,?);(_:search,leave_at,?);(_:search,type,'Train'))
system
Sure . Where will you be departing from , and what time ?
inform((_:search,departure,'cambridge');(_:search,leave_at,'18:00');(_:search,type,'Train'))
user
I am leaving from Cambridge . I would like to leave sometime after 18:00 .
inform((_:result,id,'TR5009');(_:result,leave_at,'18:40');(_:result,type,'Train'))
system
Okay the TR5009 leaves at 18:40 .
user
That sounds great , do I call to book a seat or can you help me ?
offer((_:booking,category,'Train');(_:booking,ticket,'8.08 pounds');(_:booking,type,'Booking')) request((_:search,people,?);(_:search,type,'Train'))
system
I would be more than happy to help you book ! Tickets are 8.08 pounds . How many tickets would you like me to book for your trip ?
inform((_:search,people,'6');(_:search,type,'Train'))
user
Please book for 6 people .
reqmore() inform((_:booking,category,'Train');(_:booking,ref,'4ESBHTB0');(_:booking,ticket,'48.48 GBP');(_:booking,type,'Booking'))
system
Booking was successful , the fee is 48.48 GBP payable at the station . 
 Reference number is 4ESBHTB0 .   Is there anything else I can help you with ?
thank()
user
No , thanks . That 's all I needed .
system
I 'm glad I was able to help you . Thanks for using our service have a nice day .
_:search category colleges
_:search type Attraction
_:search category colleges
_:result name christ 's college
_:result name clare hall
_:result type Attraction
_:search name clare hall
_:search type Attraction
_:result postcode ?
_:search category colleges
_:result name christ 's college
_:result name clare hall
_:search name clare hall
_:system inquired _:user
_:result postcode cb39al
_:result type Attraction
_:search day sunday
_:search destination stansted airport
_:search type Train
_:search category colleges
_:result name christ 's college
_:result name clare hall
_:search name clare hall
_:system inquired _:user
_:result postcode cb39al
_:result type Attraction
_:search day sunday
_:search destination stansted airport
_:search departure cambridge
_:search leave_at 18:00
_:search type Train
_:search category colleges
_:result name christ 's college
_:result name clare hall
_:search name clare hall
_:system inquired _:user
_:result postcode cb39al
_:search day sunday
_:search destination stansted airport
_:search departure cambridge
_:search leave_at 18:00
_:search type Train
_:result id TR5009
_:result leave_at 18:40
_:result type Train
_:search category colleges
_:result name christ 's college
_:result name clare hall
_:search name clare hall
_:system inquired _:user
_:result postcode cb39al
_:search day sunday
_:search destination stansted airport
_:search departure cambridge
_:search leave_at 18:00
_:result id TR5009
_:result leave_at 18:40
_:result type Train
_:system offered _:booking
_:booking category Train
_:booking ticket 8.08 pounds
_:booking type Booking
_:search people 6
_:search type Train
_:search category colleges
_:result name christ 's college
_:result name clare hall
_:search name clare hall
_:result postcode cb39al
_:search day sunday
_:search destination stansted airport
_:search departure cambridge
_:search leave_at 18:00
_:result id TR5009
_:result leave_at 18:40
_:result type Train
_:system offered _:booking
_:search people 6
_:search type Train
_:system inquired _:user
_:booking category Train
_:booking ref 4ESBHTB0
_:booking ticket 48.48 GBP
_:booking type Booking