inform((_:search,departure,'cambridge');(_:search,destination,'stevenage');(_:search,type,'Train'))
user
I 'm looking for a train . I want it to go to Stevenage and leave from Cambridge .
inform((_:result,amount,'many');(_:result,type,'Train')) request((_:search,day,?);(_:search,leave_at,?);(_:search,type,'Train'))
system
There are many trains available . What day and time do you want to travel ?
inform((_:search,day,'saturday');(_:search,leave_at,'18:30');(_:search,type,'Train'))
user
It should leave after 18:30 on Saturday .
inform((_:result,leave_at,'19:21');(_:result,type,'Train')) offer((_:booking,category,'Train');(_:booking,type,'Booking'))
system
I have a train leaving at 19:21 , is that okay ?
request((_:result,arrive_by,?);(_:result,ticket,?);(_:result,type,'Train'))
user
How long is the trip and when will I arrive ? Also need to know the price .
inform((_:result,duration,'49 minutes');(_:result,ticket,'12.8 GBP');(_:result,type,'Train'))
system
The trip lasts 49 minutes and is 12.8 GBP .
inform((_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
user
Okay , thank you for that information .   I also need to find a cheap restaurant .
request((_:search,food,?);(_:search,type,'Restaurant')) inform((_:result,amount,'many');(_:result,type,'Restaurant'))
system
We have many available . Do you have a certain type of food you would like ?
inform((_:search,area,'centre');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
user
Anything cheap in the centre of town please .
system
There are several places what type of food would you like ?
_:search departure cambridge
_:search destination stevenage
_:search type Train
_:search departure cambridge
_:search destination stevenage
_:result amount many
_:result type Train
_:search day saturday
_:search leave_at 18:30
_:search type Train
_:search departure cambridge
_:search destination stevenage
_:result amount many
_:search day saturday
_:search leave_at 18:30
_:search type Train
_:result leave_at 19:21
_:result type Train
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:result arrive_by ?
_:result ticket ?
_:search departure cambridge
_:search destination stevenage
_:result amount many
_:search day saturday
_:search leave_at 18:30
_:result leave_at 19:21
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:result arrive_by ?
_:result duration 49 minutes
_:result ticket 12.8 GBP
_:result type Train
_:search pricerange cheap
_:search type Restaurant
_:search departure cambridge
_:search destination stevenage
_:search day saturday
_:search leave_at 18:30
_:result leave_at 19:21
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:result arrive_by ?
_:result duration 49 minutes
_:result ticket 12.8 GBP
_:search food ?
_:result amount many
_:result type Restaurant
_:search area centre
_:search pricerange cheap
_:search type Restaurant