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.

[Q]: Context: 'I have to get food as high while water is low.'
Utterance: 'Ok, I have enough food, but I need firewood to keep warm and water because one of my containers leaked.  So, why don't you take all the food and I get everything else.'
[A]: Yes


[Q]: Context: 'I mean water and food' 'Is food something you need the most of or is it water?' 'I need 2 packages of both food and water on each'
Utterance: 'Food is a hard one to give 2 packes of since I dont have very much and need to feed my family.  We do have plenty of water though.  Would you be willing to take 3 packages of water and only get 1 package of food?'
[A]: Yes


[Q]: Context: 'Got you! I really need firewood to make smores and I don't think we have enough to last the whole night!' 'I was hoping to pick up a lot of wood. It has rained around here and the wood is soggy in the forest.' 'Which item do you prefer the most?'
Utterance: 'I know how to filter water so you can have all of the water. I would like as much firewood as possible.'
[A]:
Yes