inform((_:search,day,'friday');(_:search,departure,'birmingham new street');(_:search,type,'Train'))
user
I need a train to leave from birmingham new street on friday
inform((_:result,destination,'Cambridge');(_:result,type,'Train')) request((_:search,destination,?);(_:search,type,'Train'))
system
Is your destination Cambridge ?
inform((_:search,destination,'cambridge');(_:search,type,'Train'))
user
Yes , cambridge is my destination .
request((_:search,arrive_by,?);(_:search,type,'Train'))
system
Is there a certain time you need to arrive by ?
inform((_:search,arrive_by,'13:45');(_:search,type,'Train'))
user
Yes , I need to arrive by 13:45 . How long with the trip take ?
inform((_:result,amount,'a few');(_:result,day,'friday');(_:result,destination,'birmingham new street');(_:result,duration,'163 minutes');(_:result,type,'Train')) offer((_:booking,category,'Train');(_:booking,type,'Booking'))
system
The trip takes about 163 minutes . We have a few trains going to birmingham new street on friday , would you like to book a seat ?
inform((_:search,area,'north');(_:search,food,'indian');(_:search,type,'Restaurant'))
user
No thank you . I 'm also looking for an Indian restaurant in the north .
request((_:search,area,?);(_:search,type,'Restaurant'))
system
What area of town are you interested in dining at ?
inform((_:search,area,'north');(_:search,type,'Restaurant'))
user
In the north please .
offer((_:booking,type,'Booking')) inform((_:result,address,'Chesterton');(_:result,name,'Nirala');(_:result,pricerange,'moderately priced');(_:result,type,'Restaurant'))
system
The Nirala in Chesterton is a moderately priced restaurant . Would you like a reservation ?
inform((_:search,day,'friday');(_:search,duration,'16:00');(_:search,people,'1');(_:search,type,'Restaurant'))
user
Yeah . Can you make a reservation for 1 person at 16:00 on friday ?
inform((_:booking,ref,'PUXFOUYW');(_:booking,type,'Booking'))
system
Booking was successful . The table will be reserved for 15 minutes . 
 Reference number is : PUXFOUYW .
thank()
user
Great , thanks , that 's all I need .
system
You 're welcome . Have a good day !
_:search day friday
_:search departure birmingham new street
_:search type Train
_:search day friday
_:search departure birmingham new street
_:result destination Cambridge
_:result type Train
_:search destination cambridge
_:search type Train
_:search day friday
_:search departure birmingham new street
_:result destination Cambridge
_:result type Train
_:search destination cambridge
_:search arrive_by 13:45
_:search type Train
_:search day friday
_:search departure birmingham new street
_:search destination cambridge
_:search arrive_by 13:45
_:result amount a few
_:result day friday
_:result destination birmingham new street
_:result duration 163 minutes
_:result type Train
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:search area north
_:search food indian
_:search type Restaurant
_:search day friday
_:search departure birmingham new street
_:search destination cambridge
_:search arrive_by 13:45
_:result amount a few
_:result day friday
_:result destination birmingham new street
_:result duration 163 minutes
_:result type Train
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:search food indian
_:search area north
_:search type Restaurant
_:search departure birmingham new street
_:search destination cambridge
_:search arrive_by 13:45
_:result amount a few
_:result day friday
_:result destination birmingham new street
_:result duration 163 minutes
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:search food indian
_:search area north
_:result address Chesterton
_:result name Nirala
_:result pricerange moderately priced
_:result type Restaurant
_:search day friday
_:search duration 16:00
_:search people 1
_:search type Restaurant
_:search departure birmingham new street
_:search destination cambridge
_:search arrive_by 13:45
_:result amount a few
_:result day friday
_:result destination birmingham new street
_:result duration 163 minutes
_:system offered _:booking
_:booking category Train
_:search food indian
_:search area north
_:result address Chesterton
_:result name Nirala
_:result pricerange moderately priced
_:result type Restaurant
_:search day friday
_:search duration 16:00
_:search people 1
_:search type Restaurant
_:booking ref PUXFOUYW
_:booking type Booking