inform((_:search,area,'centre');(_:search,category,'park');(_:search,type,'Attraction'))
user
I 'm looking for a park in the centre of town .
inform((_:result,category,'park');(_:result,entrance_fee,'4 pounds');(_:result,name,'Cambridge University Botanic Gardens');(_:result,type,'Attraction'))
system
Cambridge University Botanic Gardens is the park you are looking for then . It charges and entrance fee of 4 pounds .
request((_:result,phone,?);(_:result,type,'Attraction'))
user
Can I have the phone number ?
inform((_:result,phone,'01223336265');(_:result,type,'Attraction'))
system
The phone number is 01223336265 .
inform((_:search,day,'sunday');(_:search,type,'Train'))
user
I also need a train leaving on Sunday .
request((_:search,departure,?);(_:search,destination,?);(_:search,type,'Train'))
system
Got a destination or departure site in mind ?
inform((_:search,departure,'cambridge');(_:search,destination,'the airport');(_:search,type,'Train'))
user
I would be departing from cambridge and going to the airport .
request((_:search,arrive_by,?);(_:search,leave_at,?);(_:search,type,'Train'))
system
What time would you like to leave or arrive ?
inform((_:search,arrive_by,'10 am');(_:search,type,'Train'))
user
I want to arrive by 10 AM .
inform((_:result,amount,'several');(_:result,type,'Train')) offer((_:booking,category,'Train');(_:booking,type,'Booking'))
system
I have several options would you like me to book something for you ?
request((_:result,duration,?);(_:result,type,'Train'))
user
No , I would just like to know how much the tickets are and how long the trip lasts .
inform((_:result,duration,'28 minute');(_:result,ticket,'8.08 pounds');(_:result,type,'Train'))
system
Okay the price for a train ticket will be 8.08 pounds   for 28 minute ride .
thank()
user
Great thank you . That 's all I needed .
system
Wonderful ! Have a great time !
_:search area centre
_:search category park
_:search type Attraction
_:search area centre
_:search category park
_:search type Attraction
_:result category park
_:result entrance_fee 4 pounds
_:result name Cambridge University Botanic Gardens
_:result type Attraction
_:result phone ?
_:search area centre
_:search category park
_:result category park
_:result entrance_fee 4 pounds
_:result name Cambridge University Botanic Gardens
_:result phone 01223336265
_:result type Attraction
_:search day sunday
_:search type Train
_:search area centre
_:search category park
_:result category park
_:result entrance_fee 4 pounds
_:result name Cambridge University Botanic Gardens
_:result phone 01223336265
_:result type Attraction
_:search day sunday
_:search departure cambridge
_:search destination the airport
_:search type Train
_:search area centre
_:search category park
_:result category park
_:result entrance_fee 4 pounds
_:result name Cambridge University Botanic Gardens
_:result phone 01223336265
_:result type Attraction
_:search day sunday
_:search departure cambridge
_:search destination the airport
_:search leave_at ?
_:search arrive_by 10 am
_:search type Train
_:search area centre
_:search category park
_:result category park
_:result entrance_fee 4 pounds
_:result name Cambridge University Botanic Gardens
_:result phone 01223336265
_:search day sunday
_:search departure cambridge
_:search destination the airport
_:search leave_at ?
_:search arrive_by 10 am
_:search type Train
_:result amount several
_:result type Train
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:result duration ?
_:search area centre
_:search category park
_:result category park
_:result entrance_fee 4 pounds
_:result name Cambridge University Botanic Gardens
_:result phone 01223336265
_:search day sunday
_:search departure cambridge
_:search destination the airport
_:search leave_at ?
_:search arrive_by 10 am
_:search type Train
_:result amount several
_:system offered _:booking
_:booking category Train
_:booking type Booking
_:result duration 28 minute
_:result ticket 8.08 pounds
_:result type Train