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

Action Reasoning:
The first action in the given plan is to board passenger p2 onto fast1 at floor n3, which aligns with the goal of moving passengers to their destination floors efficiently.

New State Description:
- **fast0**: Fast elevator at floor n0, 0/2 passengers.- **fast1**: Fast elevator at floor n3, 1/2 passengers (p2 on board).- **slow0-0**: Slow elevator at floor n2, 0/1 passengers.- **p0**: On floor n4.- **p1**: On floor n1.- **p2**: On board fast1.- **p3**: On floor n4.- **p4**: On floor n2.- **p5**: On floor n5.- **p6**: On floor n2.

Action Chosen:
(board p2 fast1 n3 n0 n1)
