inform((_:search,day,'tuesday');(_:search,leave_at,'3:15');(_:search,type,'Train'))
user
Can you locate for me a train that leaves on Tuesday after 3:15 PM ? Thanks .
inform((_:result,arrive_by,'15:51');(_:result,day,'tuesday');(_:result,departure,'cambridge');(_:result,destination,'london kings cross');(_:result,leave_at,'15:00');(_:result,type,'Train'))
system
there is a train that leaves cambridge at 15:00 and arrives at london kings cross at 15:51 on tuesday .
inform((_:search,leave_at,'15:15');(_:search,type,'Train'))
user
That 's too early . I need to leave after 15:15 .
inform((_:result,arrive_by,'17:51');(_:result,departure,'Cambridge');(_:result,destination,'London Kings Cross');(_:result,id,'TR0945');(_:result,leave_at,'17:00');(_:result,type,'Train'))
system
The next best option will be TR0945 which leaves Cambridge at 17:00 and arrives at London Kings Cross at 17:51 .
inform((_:search,people,'8');(_:search,type,'Train'))
user
Yes . Book that one for 8 people .
inform((_:booking,category,'Train');(_:booking,ref,'PYEQ37FS');(_:booking,ticket,'188.8 GBP');(_:booking,type,'Booking'))
system
I have , ade the booking and here is the information : Booking was successful , the total fee is 188.8 GBP payable at the station . 
 Reference number is : PYEQ37FS .
inform((_:search,area,'centre');(_:search,type,'Attraction'))
user
I 'm also looking for a place to go in the centre .
request((_:search,category,?);(_:search,type,'Attraction'))
system
Sure , what type of attraction are you interested in ?
inform((_:search,category,'theatre');(_:search,type,'Attraction')) request((_:result,address,?);(_:result,phone,?);(_:result,postcode,?);(_:result,type,'Attraction'))
user
I would like to go to a theatre . Can I please have the address , post code , and phone number to one that you recommend ?
inform((_:result,address,"6 saint edward 's passage");(_:result,name,'cambridge arts theatre');(_:result,phone,'01223503333');(_:result,postcode,'cb23pj');(_:result,type,'Attraction'))
system
I suggest the cambridge arts theatre . The address is 6 saint edward 's passage . The post code is cb23pj and the phone number is 01223503333 .
user
That works .   I am all set .
system
Have a wonderful day !
_:search day tuesday
_:search leave_at 3:15
_:search type Train
_:search day tuesday
_:result arrive_by 15:51
_:result day tuesday
_:result departure cambridge
_:result destination london kings cross
_:result leave_at 15:00
_:result type Train
_:search leave_at 15:15
_:search type Train
_:search day tuesday
_:result day tuesday
_:search leave_at 15:15
_:result arrive_by 17:51
_:result departure Cambridge
_:result destination London Kings Cross
_:result id TR0945
_:result leave_at 17:00
_:result type Train
_:search people 8
_:search type Train
_:search day tuesday
_:result day tuesday
_:search leave_at 15:15
_:result arrive_by 17:51
_:result departure Cambridge
_:result destination London Kings Cross
_:result id TR0945
_:result leave_at 17:00
_:result type Train
_:search people 8
_:booking category Train
_:booking ref PYEQ37FS
_:booking ticket 188.8 GBP
_:booking type Booking
_:search area centre
_:search type Attraction
_:search day tuesday
_:result day tuesday
_:search leave_at 15:15
_:result arrive_by 17:51
_:result departure Cambridge
_:result destination London Kings Cross
_:result id TR0945
_:result leave_at 17:00
_:result type Train
_:search people 8
_:booking category Train
_:booking ref PYEQ37FS
_:booking ticket 188.8 GBP
_:booking type Booking
_:search area centre
_:search category theatre
_:search type Attraction
_:result address ?
_:result phone ?
_:result postcode ?
_:result type Attraction
_:search day tuesday
_:result day tuesday
_:search leave_at 15:15
_:result arrive_by 17:51
_:result departure Cambridge
_:result destination London Kings Cross
_:result id TR0945
_:result leave_at 17:00
_:search people 8
_:booking category Train
_:booking ref PYEQ37FS
_:booking ticket 188.8 GBP
_:booking type Booking
_:search area centre
_:search category theatre
_:search type Attraction
_:result address 6 saint edward 's passage
_:result name cambridge arts theatre
_:result phone 01223503333
_:result postcode cb23pj
_:result type Attraction