inform((_:search,type,'Hospital'))
user
Where is Addenbrookes Hospital ?
inform((_:result,address,'Hills Rd , Cambridge');(_:result,type,'Hospital'))
system
Addenbrookes Hospital is located on Hills Rd , Cambridge . Do you need the phone number ?
request((_:result,postcode,?);(_:result,type,'Hospital'))
user
I need the postcode please .
inform((_:result,postcode,'CB20QQ');(_:result,type,'Hospital')) request((_:search,department,?);(_:search,type,'Hospital'))
system
The postcode is CB20QQ . Do   you need specific department information ?
thank()
user
No , that is all I need , thank you .
system
Thank you goodbye
_:search type Hospital
_:search type Hospital
_:result address Hills Rd , Cambridge
_:result type Hospital
_:result postcode ?
_:result address Hills Rd , Cambridge
_:result postcode CB20QQ
_:result type Hospital
_:search department ?
_:search type Hospital