Before revision:  On the MultiWOZ benchmark, we achieve over 71 \% turn-by-turn slot accuracy on a cleaned, reannotated test set, without using any of the original training data. Our state machine can model 96 \% of the human agent turns.
After revision:  On the MultiWOZ benchmark, we achieve over 71 \% turn-by-turn exact match accuracy and 85\% slot accuracy, while our annotation effort amounts to only 2 \% of the human agent turns.