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

Action Reasoning:
Moving fast1 with p2 to floor 5 allows p2 to reach their destination, aligning with the goal state while optimizing fast elevator usage.

New State Description:
- Fast elevator `fast0` is at floor 0 with 0 passengers out of 2.- Fast elevator `fast1` is at floor 5 with `p2` onboard, now 1 passenger out of 2.- Slow elevator `slow0-0` is at floor 2 with `p4` onboard, 1 passenger out of 1.- Passenger `p0` is on floor 4.- Passenger `p1` is on floor 1.- Passenger `p2` is onboard `fast1` on floor 5.- Passenger `p3` is on floor 4.- Passenger `p5` is on floor 5.- Passenger `p6` is on floor 2.

Action Chosen:
(move-up-fast fast1 n3 n5)
