inform((_:search,departure,'cambridge');(_:search,destination,'london liverpool street');(_:search,type,'Train'))
user
Find me train times from cambridge to london liverpool street .
request((_:search,day,?);(_:search,type,'Train'))
system
Which day would you be traveling ?
inform((_:search,day,'wednesday');(_:search,leave_at,'08:00');(_:search,type,'Train'))
user
Wednesday , please . Any time after 08:00 .
inform((_:result,arrive_by,'11:27');(_:result,destination,'London Liverpool Street');(_:result,id,'TR5874');(_:result,leave_at,'09:59');(_:result,type,'Train')) offer((_:booking,category,'Train');(_:booking,type,'Booking'))
system
I have train TR5874 that leaves at 09:59 and arrives in London Liverpool Street at 11:27 . Would that suit your needs ?
user
Yes , I would like a ticket just for myself .
inform((_:booking,category,'Train');(_:booking,ref,'E770Z8W7');(_:booking,ticket,'16.6 GBP');(_:booking,type,'Booking'))
system
I have booked the seat and here is the information - Booking was successful , the total fee is 16.6 GBP payable at the station . 
 Reference number is : E770Z8W7 .
inform((_:search,area,'west');(_:search,category,'hotel');(_:search,pricerange,'moderately');(_:search,type,'Hotel'))
user
Thank you . Please also find me a moderately priced hotel on the West side
offer((_:booking,type,'Booking')) inform((_:result,name,"Hobson 's House");(_:result,type,'Hotel'))
system
Yes , Hobson 's House matches your request . Would you like me to book a room for you ?
inform((_:search,has_parking,'yes');(_:search,stars,'4');(_:search,type,'Hotel'))
user
check first if it has   free parking and should have a star of 4
system
It fits that criteria .
user
Okay , go ahead and book a room . It 's just for me .
request((_:booking,stay,?);(_:booking,type,'Booking'))
system
How many nights would you like ?
inform((_:search,day,'monday');(_:search,people,'1');(_:search,stay,'2');(_:search,type,'Hotel'))
user
Please book for 2 nights , for 1 person starting on Monday .
system
I 'm sorry , but the hobsons house is a 3 star guesthouse .
_:search departure cambridge
_:search destination london liverpool street
_:search type Train
_:search departure cambridge
_:search destination london liverpool street
_:search day wednesday
_:search leave_at 08:00
_:search type Train
_:search departure cambridge
_:search destination london liverpool street
_:search day wednesday
_:search leave_at 08:00
_:search type Train
_:result arrive_by 11:27
_:result destination London Liverpool Street
_:result id TR5874
_:result leave_at 09:59
_:result type Train
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:search departure cambridge
_:search destination london liverpool street
_:search day wednesday
_:search leave_at 08:00
_:result arrive_by 11:27
_:result destination London Liverpool Street
_:result id TR5874
_:result leave_at 09:59
_:result type Train
_:system offered _:booking
_:booking category Train
_:booking ref E770Z8W7
_:booking ticket 16.6 GBP
_:booking type Booking
_:search area west
_:search category hotel
_:search pricerange moderately
_:search type Hotel
_:search departure cambridge
_:search destination london liverpool street
_:search day wednesday
_:search leave_at 08:00
_:result arrive_by 11:27
_:result destination London Liverpool Street
_:result id TR5874
_:result leave_at 09:59
_:system offered _:booking
_:booking category Train
_:booking ref E770Z8W7
_:booking ticket 16.6 GBP
_:booking type Booking
_:search area west
_:search category hotel
_:search pricerange moderately
_:result name Hobson 's House
_:result type Hotel
_:search has_parking yes
_:search stars 4
_:search type Hotel
_:search departure cambridge
_:search destination london liverpool street
_:search day wednesday
_:search leave_at 08:00
_:result arrive_by 11:27
_:result destination London Liverpool Street
_:result id TR5874
_:result leave_at 09:59
_:system offered _:booking
_:booking category Train
_:booking ref E770Z8W7
_:booking ticket 16.6 GBP
_:booking type Booking
_:search area west
_:search category hotel
_:search pricerange moderately
_:result name Hobson 's House
_:result type Hotel
_:search has_parking yes
_:search stars 4
_:search type Hotel
_:search departure cambridge
_:search destination london liverpool street
_:search leave_at 08:00
_:result arrive_by 11:27
_:result destination London Liverpool Street
_:result id TR5874
_:result leave_at 09:59
_:system offered _:booking
_:booking category Train
_:booking ref E770Z8W7
_:booking ticket 16.6 GBP
_:search area west
_:search category hotel
_:search pricerange moderately
_:result name Hobson 's House
_:result type Hotel
_:search has_parking yes
_:search stars 4
_:booking stay ?
_:booking type Booking
_:search day monday
_:search people 1
_:search stay 2
_:search type Hotel