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: 'How many of each supply would you like? what is your favorite?' 'I am flexible, but I would prefer some food and firewood. I have a large family to feed and all of my food needs to be cooked.' 'I also would prefer some food but am willing to give 3 fire wood in exchange for 3 water. I suffer from chronic dehydration because I sweat too much.'
Utterance: 'Excellent, I would love to help you out. We have plenty of water to spare. I'd gladly give you 3 water in exchange for 3 firewood.'
[A]: Yes

[Q]: Context: 'Same! I'm a little worried about some of my supplies though. What about you?' 'Likewise! What are you most in need of?' 'Well, I'm camping up on a snowy mountain and I gave some of my food away to hikers who were passing me and were very tired and hungry, so I'd really like to get some more food. Firewood would be useful too, although I do have a thick coat and a sleeping bag. I plan on melting the snow to get water, so I don't think I'll need that too much. And you?'
Utterance: 'I have the same needs. I have a low metabolism, so I need food and firewood to keep me warm and energized. Water I plan on filtering elsewhere.'
[A]: Yes

[Q]: Context: 'I am so excited to go camping! I am planning a nice long walk in the woods to decompress from the hectic days of working.' 'I am too. I've been thinking of this since COVID. I hear we have some materials to share between the two of us. What are you thinking? For me, I am from the South so I get cold easily 🙂 so firewood is my main priority.'
Utterance: 'Perfect! I'm a northerner, so the firewood is all yours! I'll need lot's of water to keep hydrated after the hike, and I'll probably be pretty hungry too.'
[A]:
Yes