The input is taken from a negotiation between two participants who take the role of campsite neighbors and negotiate for Food, Water, and Firewood packages, based on their individual preferences and requirements. Given an utterance and recent dialogue context containing past 3 utterances (wherever available), output Yes if the utterance contains the no-need strategy, otherwise output No. no-need is a cooperative negotiation strategy. It is used when a participant points out that they do not need an item based on personal context such as suggesting that they have ample water to spare. no-need can directly benefit the opponent since it implies that the item is up for grabs.

Input: Consider Input: Context: 'I think we will need more extra food than that.  How about the reverse, I get 2 food and 1 water and you get 1 food and 2 water.' 'I could do that if I could then get 2 packages of wood as well because it's been bitterly cold this time of year at night in the Alleghenies.' 'That sounds fair.  So I would get 2 food, 1 water, and 1 firewood.'
Utterance: 'Yes.  That's mighty kind of you and I'm glad we both got what we needed.'

Output: No


Input: Consider Input: Context: 'What are your preferences?  I always love having a big fire at night when I am camping and I do think water is more important than food.'
Utterance: 'I like to have a lot of food to keep my energy up, but I might need some firewood to cook that food. I can't wait for my camping trip.🙂'

Output: No


Input: Consider Input: Context: 'What if I take 1 more firewood, so I would have 2?' 'I mean I would gladly trade a water and firewood for one of your extra food. ' 'No, I really do need the food the most. Let's go back to your original deal? I'll take 2 foods, you get one. I'll take 1 water, 1 firewood, and you take the rest? Do I have that right?'
Utterance: 'Yup'


Output: No