inform((_:search,departure,'cambridge');(_:search,leave_at,'17:30');(_:search,type,'Train'))
user
i need a train out of cambridge after 17:30
request((_:search,destination,?);(_:search,type,'Train'))
system
I 'd be happy to help . What is your destination ?
inform((_:search,day,'thursday');(_:search,destination,"london king 's cross");(_:search,type,'Train'))
user
I 'd like to get to London King 's Cross on Thursday .
inform((_:result,amount,'only option');(_:result,id,'TR6595');(_:result,leave_at,'19:00');(_:result,type,'Train')) offer((_:booking,category,'Train');(_:booking,type,'Booking'))
system
The only option we have is the TR6595 which leaves at 19:00 . Does thatwork for you ?
inform((_:search,people,'5');(_:search,type,'Train'))
user
Yes , please book it for 5 people .
inform((_:booking,category,'Train');(_:booking,ref,'STVHW0DA');(_:booking,type,'Booking'))
system
Your reference number is STVHW0DA .
inform((_:search,type,'Train'))
user
Can you locate a Starbucks Coffee near the train station in London King 's Cross ?
reqmore() inform((_:result,count,'1');(_:result,type,'Attraction'))
system
There is one 3 blocks from the station , is there anything else ?
inform((_:search,has_internet,'yes');(_:search,pricerange,'cheap');(_:search,type,'Hotel'))
user
I am also looking for a cheap place to stay that has wifi .
request((_:search,area,?);(_:search,type,'Hotel')) inform((_:result,count,'10');(_:result,has_internet,'none');(_:result,pricerange,'cheap');(_:result,type,'Hotel'))
system
Ok .   There are 10 cheap places with wifi .   Were you looking for a certain part of town ?
inform((_:search,stars,'zero');(_:search,type,'Hotel'))
user
It does n't matter , but I want it to be zero stars .
inform((_:result,name,'City Centre North B and B.');(_:result,name,'El Shaddai');(_:result,stars,'zero');(_:result,type,'Hotel'))
system
El Shaddai gets zero stars and so does the City Centre North B and B.
user
Which one of those is the cheapest ?
inform((_:result,pricerange,'same price');(_:result,type,'Hotel'))
system
It appears they about the same price .
inform((_:search,day,'sunday');(_:search,name,'El Shaddai');(_:search,people,'5');(_:search,stay,'4');(_:search,type,'Hotel'))
user
Ok please book El Shaddai for 5 people and 4 nights starting sunday
reqmore() inform((_:booking,ref,'BV84E4XA');(_:booking,type,'Booking'))
system
Booking was successful . 
 Reference number is : BV84E4XA . What else can I assist you with ?
thank()
user
That is all I need today . Thank you for your help .
system
Have a wonderful day . If there is anything else just let me know .
_:search departure cambridge
_:search leave_at 17:30
_:search type Train
_:search departure cambridge
_:search leave_at 17:30
_:search day thursday
_:search destination london king 's cross
_:search type Train
_:search departure cambridge
_:search leave_at 17:30
_:search day thursday
_:search destination london king 's cross
_:result amount only option
_:result id TR6595
_:result leave_at 19:00
_:result type Train
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:search people 5
_:search type Train
_:search departure cambridge
_:search leave_at 17:30
_:search day thursday
_:search destination london king 's cross
_:result amount only option
_:result id TR6595
_:result leave_at 19:00
_:result type Train
_:system offered _:booking
_:search people 5
_:booking category Train
_:booking ref STVHW0DA
_:booking type Booking
_:search type Train
_:search departure cambridge
_:search leave_at 17:30
_:search day thursday
_:search destination london king 's cross
_:result amount only option
_:result id TR6595
_:result leave_at 19:00
_:system offered _:booking
_:search people 5
_:booking category Train
_:booking ref STVHW0DA
_:booking type Booking
_:system inquired _:user
_:result count 1
_:result type Attraction
_:search has_internet yes
_:search pricerange cheap
_:search type Hotel
_:search departure cambridge
_:search leave_at 17:30
_:search day thursday
_:search destination london king 's cross
_:result amount only option
_:result id TR6595
_:result leave_at 19:00
_:system offered _:booking
_:search people 5
_:booking category Train
_:booking ref STVHW0DA
_:booking type Booking
_:system inquired _:user
_:search has_internet yes
_:search pricerange cheap
_:search area ?
_:result count 10
_:result has_internet none
_:result pricerange cheap
_:result type Hotel
_:search stars zero
_:search type Hotel
_:search departure cambridge
_:search leave_at 17:30
_:search day thursday
_:search destination london king 's cross
_:result amount only option
_:result id TR6595
_:result leave_at 19:00
_:system offered _:booking
_:search people 5
_:booking category Train
_:booking ref STVHW0DA
_:booking type Booking
_:system inquired _:user
_:search has_internet yes
_:search pricerange cheap
_:search area ?
_:result count 10
_:result has_internet none
_:result pricerange cheap
_:search stars zero
_:search type Hotel
_:result name City Centre North B and B.
_:result name El Shaddai
_:result stars zero
_:result type Hotel
_:search departure cambridge
_:search leave_at 17:30
_:search destination london king 's cross
_:result amount only option
_:result id TR6595
_:result leave_at 19:00
_:system offered _:booking
_:booking category Train
_:booking ref STVHW0DA
_:booking type Booking
_:system inquired _:user
_:search has_internet yes
_:search pricerange cheap
_:search area ?
_:result count 10
_:result has_internet none
_:search stars zero
_:result name City Centre North B and B.
_:result name El Shaddai
_:result stars zero
_:result pricerange same price
_:result type Hotel
_:search day sunday
_:search name El Shaddai
_:search people 5
_:search stay 4
_:search type Hotel
_:search departure cambridge
_:search leave_at 17:30
_:search destination london king 's cross
_:result amount only option
_:result id TR6595
_:result leave_at 19:00
_:system offered _:booking
_:booking category Train
_:search has_internet yes
_:search pricerange cheap
_:search area ?
_:result count 10
_:result has_internet none
_:search stars zero
_:result name City Centre North B and B.
_:result name El Shaddai
_:result stars zero
_:result pricerange same price
_:result type Hotel
_:search day sunday
_:search name El Shaddai
_:search people 5
_:search stay 4
_:search type Hotel
_:system inquired _:user
_:booking ref BV84E4XA
_:booking type Booking