inform((_:search,day,'sunday');(_:search,leave_at,'16:00');(_:search,type,'Train'))
user
Can you book a train for me ? I need to leave after 16:00 on sunday .
request((_:search,departure,?);(_:search,destination,?);(_:search,type,'Train'))
system
We can help you look up for a specific schedule if you can supply to us your Departure point and Destination as well .
inform((_:search,departure,'leicester');(_:search,destination,'cambridge');(_:search,type,'Train'))
user
I am leaving from Leicester and going to Cambridge .
inform((_:result,arrive_by,'17:54');(_:result,count,'8');(_:result,destination,'Cambridge');(_:result,leave_at,'16:09');(_:result,type,'Train')) offer((_:booking,category,'Train');(_:booking,type,'Booking'))
system
That gives us about 8 different options . The earliest train leaves at 16:09 and will put you in Cambridge by 17:54 . Would that interest you ?
inform((_:search,people,'8');(_:search,type,'Train')) request((_:result,ref,?);(_:result,type,'Train'))
user
Yes , it interests me a great deal . Book it for 8 please and get me the reference number .
reqmore() inform((_:booking,category,'Train');(_:booking,ref,'BZX66OVA');(_:booking,ticket,'241.92 GBP');(_:booking,type,'Booking'))
system
Booking was successful , the total fee is 241.92 GBP payable at the station . 
 Reference number is : BZX66OVA . Can I further assist you today ?
inform((_:search,has_internet,'yes');(_:search,has_parking,'yes');(_:search,type,'Hotel'))
user
I am also looking for a room . Free parking and Wifi .
request((_:search,area,?);(_:search,type,'Hotel'))
system
Which area would you like to stay in ?
inform((_:search,pricerange,'expensive');(_:search,type,'Hotel'))
user
It does n't matter . I would like it to be in the expensive range .
request((_:search,stars,?);(_:search,type,'Hotel')) inform((_:result,count,'5');(_:result,type,'Hotel'))
system
I have five . Do you have a star rating preference ?
inform((_:search,type,'Hotel'))
user
No , no star rating preference . Whichever hotel you recommend .
system
Well there are many to choose from . Are you sure we could n't narrow it down by area ?
_:search day sunday
_:search leave_at 16:00
_:search type Train
_:search day sunday
_:search leave_at 16:00
_:search departure leicester
_:search destination cambridge
_:search type Train
_:search day sunday
_:search leave_at 16:00
_:search departure leicester
_:search destination cambridge
_:result arrive_by 17:54
_:result count 8
_:result destination Cambridge
_:result leave_at 16:09
_:result type Train
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:search people 8
_:search type Train
_:result ref ?
_:search day sunday
_:search leave_at 16:00
_:search departure leicester
_:search destination cambridge
_:result arrive_by 17:54
_:result count 8
_:result destination Cambridge
_:result leave_at 16:09
_:result type Train
_:system offered _:booking
_:search people 8
_:result ref ?
_:system inquired _:user
_:booking category Train
_:booking ref BZX66OVA
_:booking ticket 241.92 GBP
_:booking type Booking
_:search has_internet yes
_:search has_parking yes
_:search type Hotel
_:search day sunday
_:search leave_at 16:00
_:search departure leicester
_:search destination cambridge
_:result arrive_by 17:54
_:result count 8
_:result destination Cambridge
_:result leave_at 16:09
_:result type Train
_:system offered _:booking
_:search people 8
_:result ref ?
_:system inquired _:user
_:booking category Train
_:booking ref BZX66OVA
_:booking ticket 241.92 GBP
_:booking type Booking
_:search has_internet yes
_:search has_parking yes
_:search area ?
_:search pricerange expensive
_:search type Hotel
_:search day sunday
_:search leave_at 16:00
_:search departure leicester
_:search destination cambridge
_:result arrive_by 17:54
_:result destination Cambridge
_:result leave_at 16:09
_:system offered _:booking
_:search people 8
_:result ref ?
_:system inquired _:user
_:booking category Train
_:booking ref BZX66OVA
_:booking ticket 241.92 GBP
_:booking type Booking
_:search has_internet yes
_:search has_parking yes
_:search area ?
_:search pricerange expensive
_:search stars ?
_:result count 5
_:result type Hotel
_:search type Hotel