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

Action Reasoning:
Passenger p1 is already onboard fast1 at floor 1. The best action is to move fast1 up to floor 3, as it brings p1 closer to their goal floor while also allowing p4 to board, minimizing elevator occupancy time and optimizing cost.

New State Description:
- Elevator fast0 is at floor 0 (n0), empty, capacity 2.- Elevator fast1 is at floor 3 (n3), with passenger p1 onboard, 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 at floor 0 (n0).- Passenger p1 is onboard fast1.- Passenger p2 is at floor 2 (n2).- Passenger p3 is at floor 0 (n0).- Passenger p4 is on floor 1 (n1).- Passenger p5 is at floor 2 (n2).

Action Chosen:
move-up-fast(fast1, n1, n3)
