inform((_:search,area,'centre');(_:search,pricerange,'cheap');(_:search,type,'Restaurant'))
user
I 'm looking for cheap places to eat in the centre of the city .
request((_:search,food,?);(_:search,type,'Restaurant')) inform((_:result,amount,'fifteen');(_:result,pricerange,'cheap');(_:result,type,'Restaurant'))
system
Okay , there are fifteen restaurants in that area within the cheap price range . Do you have a preference on the cuisine that is served ?
inform((_:search,food,'Not');(_:search,type,'Restaurant'))
user
Not really .   Which is your favorite ?
offer((_:booking,type,'Booking')) inform((_:result,food,'Chinese');(_:result,type,'Restaurant'))
system
Chinese would be a good choice . Would you like me to book one for you ?
inform((_:search,day,'wednesday');(_:search,duration,'12:15');(_:search,people,'6');(_:search,type,'Restaurant')) request((_:result,ref,?);(_:result,type,'Restaurant'))
user
Yes , for 6 people , 12:15 on Wednesday . Reference number please .
inform((_:booking,name,'Charlie Chan');(_:booking,ref,'W3TZFF5S');(_:booking,type,'Booking'))
system
I 'll book you at Charlie Chan . In my opinion , its the best ! Your booking was successful . The table will be reserved for 15 minutes . 
 Reference number is : W3TZFF5S .
inform((_:search,area,'centre');(_:search,category,'hotel');(_:search,pricerange,'cheap');(_:search,stars,'0');(_:search,type,'Hotel'))
user
I would also like a place to stay . I would like a cheap 0 star hotel in the centre .
inform((_:result,category,'guesthouse');(_:result,name,'el shaddai');(_:result,pricerange,'cheap');(_:result,stars,'0');(_:result,type,'Hotel')) offer((_:booking,type,'Booking'))
system
el shaddai is a 0 star guesthouse in the cheap pricerange . Does this work for you ?
inform((_:search,type,'Hotel'))
user
Is there not a hotel ?
canthelp((_:search,area,'centre');(_:search,category,'hotels');(_:search,pricerange,'cheap');(_:search,stars,'0-star');(_:search,type,'Hotel'))
system
I 'm sorry , there are no cheap 0-star hotels in the centre area of the city .
inform((_:search,category,'guesthouse');(_:search,pricerange,'cheap');(_:search,stars,'0-star');(_:search,type,'Hotel'))
user
How about a guesthouse with 0-star and cheap ?
offer((_:booking,type,'Booking')) request((_:search,area,?);(_:search,type,'Hotel')) inform((_:result,amount,'only one');(_:result,name,'El Shaddai');(_:result,type,'Hotel')) reqmore()
system
The El Shaddai is the only one . Would you like to book a room there ? Or maybe you need some more information ? Or we could try another part of town .
inform((_:search,area,'none');(_:search,name,'El Shaddai');(_:search,type,'Hotel')) request((_:result,address,?);(_:result,postcode,?);(_:result,type,'Hotel'))
user
More information please .   I 'd just like the address and postcode for El Shaddai .
system
There are no hotels in El Shaddai that have 0 stars and are cheap .
_:search area centre
_:search pricerange cheap
_:search type Restaurant
_:search area centre
_:search pricerange cheap
_:result amount fifteen
_:result pricerange cheap
_:result type Restaurant
_:search food Not
_:search type Restaurant
_:search area centre
_:search pricerange cheap
_:result amount fifteen
_:result pricerange cheap
_:search food Not
_:system offered _:booking
_:booking type Booking
_:result food Chinese
_:result type Restaurant
_:search day wednesday
_:search duration 12:15
_:search people 6
_:search type Restaurant
_:result ref ?
_:result amount fifteen
_:result pricerange cheap
_:search food Not
_:system offered _:booking
_:result food Chinese
_:result type Restaurant
_:search day wednesday
_:search duration 12:15
_:search people 6
_:result ref ?
_:booking name Charlie Chan
_:booking ref W3TZFF5S
_:booking type Booking
_:search area centre
_:search category hotel
_:search pricerange cheap
_:search stars 0
_:search type Hotel
_:result amount fifteen
_:search food Not
_:system offered _:booking
_:result food Chinese
_:search day wednesday
_:search duration 12:15
_:search people 6
_:result ref ?
_:booking name Charlie Chan
_:booking ref W3TZFF5S
_:booking type Booking
_:search area centre
_:search category hotel
_:search pricerange cheap
_:search stars 0
_:result category guesthouse
_:result name el shaddai
_:result pricerange cheap
_:result stars 0
_:result type Hotel
_:search type Hotel
_:result amount fifteen
_:search food Not
_:system offered _:booking
_:result food Chinese
_:search day wednesday
_:search duration 12:15
_:search people 6
_:result ref ?
_:booking name Charlie Chan
_:booking ref W3TZFF5S
_:booking type Booking
_:search area centre
_:result category guesthouse
_:result name el shaddai
_:result pricerange cheap
_:result stars 0
_:result type Hotel
_:system canthelp _:search/dca6b8d9
_:search/dca6b8d9 area centre
_:search/dca6b8d9 category hotels
_:search/dca6b8d9 pricerange cheap
_:search/dca6b8d9 stars 0-star
_:search/dca6b8d9 type Hotel
_:search category guesthouse
_:search pricerange cheap
_:search stars 0-star
_:search type Hotel
_:search food Not
_:system offered _:booking
_:result food Chinese
_:search day wednesday
_:search duration 12:15
_:search people 6
_:result ref ?
_:booking name Charlie Chan
_:booking ref W3TZFF5S
_:booking type Booking
_:result category guesthouse
_:result pricerange cheap
_:result stars 0
_:system canthelp _:search/dca6b8d9
_:search/dca6b8d9 area centre
_:search/dca6b8d9 category hotels
_:search/dca6b8d9 pricerange cheap
_:search/dca6b8d9 stars 0-star
_:search/dca6b8d9 type Hotel
_:search category guesthouse
_:search pricerange cheap
_:search stars 0-star
_:result amount only one
_:result name El Shaddai
_:result type Hotel
_:system inquired _:user
_:search area none
_:search name El Shaddai
_:search type Hotel
_:result address ?
_:result postcode ?