User: Please carefully read the following conversation and answer: Is the very last utterance from the speaker a positive, neutral, or negative feedback? Often negative feedbacks include corrections and keywords like no, not, undo, don't, with generally negative sentiment, while positive feedbacks often include good, yes, correct, okay, or simply move on to the next stage. 
(start of the conversation)
	Listener: select B 
	Speaker: undo last two pics 
	Listener: deselect B H 
	Speaker: zig zag 
(end of the conversation)
Answer a single word, Positive, Neutral or Negative. 
Assistant: Negative.