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: 'Of course! Are you going camping too?' 'Yes. I have 2 children so I was thinking that I will need extra water. 🙂' 'I too need extra water, but I'm willing to negotiate on the other things if you are! 🙂'
Utterance: 'If I take 2 waters, will you accept 2 firewood?'
[A]: No

[Q]: Context: 'I'm like that as well, a small appetite.' 'I need firewood the least of all though, because I have a lot of coats for warmth.' 'Are you bringing several coats while camping?'
Utterance: 'Yeah, I might even have too many.I still need water the most,so I'm thinking I should take the water and you should take the firewood.'
[A]: Yes

[Q]: Context: 'I have firewood, what I need mainly is water, then food' 'Ah, I see. I have plenty of firewood as well but mostly need food and some water.' 'so let me suggest a split, I get two water and two food, you get one food, one water and three firewood'
Utterance: 'I really don't need that much firewood. How about You get two water, one food and one firewood. And I'll take two food, one water and two firewood.'
[A]:
Yes