inform((_:search,arrive_by,'04:00');(_:search,departure,'the junction');(_:search,type,'Taxi'))
user
I need to book a taxi from the junction and I need to arrive by 04:00 .
request((_:search,departure,?);(_:search,type,'Taxi'))
system
Sure ! Where are you coming from ?
inform((_:search,departure,'the junction');(_:search,destination,'regency gallery');(_:search,type,'Taxi'))
user
I need picked up at the junction , I will be going to regency gallery .
system
Booking completed ! 
 Booked car type 	 : 	 yellow skoda 
 Contact number 	 : 	 07606313194
_:search arrive_by 04:00
_:search departure the junction
_:search type Taxi
_:search arrive_by 04:00
_:search departure the junction
_:search destination regency gallery
_:search type Taxi