inform((_:search,destination,'bishops stortford');(_:search,leave_at,'16:30');(_:search,type,'Train'))
user
i need a train to bishops stortford that leaves after 16:30 , please .
request((_:search,destination,?);(_:search,type,'Train'))
system
Where will you be travelling to ?
user
I already told you .
request((_:search,day,?);(_:search,departure,?);(_:search,type,'Train'))
system
Where will you be departing from and what day do you wish to travel ?
inform((_:search,day,'tuesday');(_:search,departure,'cambridge');(_:search,type,'Train'))
user
I would like to leave on Tuesday , and depart from Cambridge .
inform((_:result,day,'Tuesday');(_:result,departure,'Cambridge');(_:result,destination,'Bishops Stortford');(_:result,id,'TR2153');(_:result,leave_at,'17:29');(_:result,type,'Train')) offer((_:booking,category,'Train');(_:booking,type,'Booking'))
system
The TR2153 departs Cambridge for Bishops Stortford on Tuesday at 17:29 , would   you like to book a seat on this train ?
inform((_:search,people,'7');(_:search,type,'Train'))
user
Yeah . I need to book for 7 people .
inform((_:booking,category,'Train');(_:booking,ref,'C2KPV8JC');(_:booking,ticket,'70.7 GBP');(_:booking,type,'Booking'))
system
Booking was successful , the total fee is 70.7 GBP payable at the station . 
 Reference number is : C2KPV8JC .
inform((_:search,category,'guesthouse');(_:search,has_internet,'yes');(_:search,type,'Hotel'))
user
I also need a place to stay , I 'd like possibly a guesthouse with free wifi .
system
Ok i will find you one as soon as possible and inform you thanks a lot
_:search destination bishops stortford
_:search leave_at 16:30
_:search type Train
_:search leave_at 16:30
_:search destination ?
_:search type Train
_:search leave_at 16:30
_:search destination ?
_:search day tuesday
_:search departure cambridge
_:search type Train
_:search leave_at 16:30
_:search destination ?
_:search day tuesday
_:search departure cambridge
_:result day Tuesday
_:result departure Cambridge
_:result destination Bishops Stortford
_:result id TR2153
_:result leave_at 17:29
_:result type Train
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:search people 7
_:search type Train
_:search leave_at 16:30
_:search destination ?
_:search day tuesday
_:search departure cambridge
_:result day Tuesday
_:result departure Cambridge
_:result destination Bishops Stortford
_:result id TR2153
_:result leave_at 17:29
_:result type Train
_:system offered _:booking
_:search people 7
_:booking category Train
_:booking ref C2KPV8JC
_:booking ticket 70.7 GBP
_:booking type Booking
_:search category guesthouse
_:search has_internet yes
_:search type Hotel