Attempt Number: 2
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
Passenger p3 needs to move to floor 0 (n0). Elevator fast0 is conveniently at floor 4 (n4) with capacity, so boarding p3 onto fast0 brings us closer to the goal.

New State Description:
- Elevator fast0 is at floor 4 (n4), with passenger p3 on board, capacity 1/2.- Elevator fast1 is at floor 2 (n2), with passenger p2 on board, capacity 1/2.- Elevator slow0-0 is at floor 0 (n0), empty, capacity 1.- Elevator slow1-0 is at floor 2 (n2), empty, capacity 1.- Passenger p0 is on floor 0 (n0).- Passenger p1 is on floor 1 (n1).- Passenger p2 is on board fast1 at floor 2 (n2).- Passenger p3 is on board fast0 at floor 4 (n4).- Passenger p4 is on floor 1 (n1).- Passenger p5 is on floor 2 (n2).

Action Chosen:
board(p3, fast0, n4, 0, 1)
