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.

[EX Q]: Context: 'We are going to be in an area where there is little potable water.  I don't have a water filter either.  The extra water will be very important for our group.  ' 'I understand. We will have a big group (about 10 people) so we are trying to have as much water as possible as well. If anyone gets dehydrated it'd be the end of the trip and hard to get everyone back to base. What's the fewest amount of bottles you're willing to accept?' '😮Two packages is the lowest I would accept.  There is one exception to that.  If you were willing to give up 2 firewood, then I would be willing to take 1 water.  I think I could trade some extra firewood for water at the campsite.'
Utterance: 'I understand. I am not willing to give up any firewood, but I'd be willing to do a trade of 1 food for 1 water. So 3 firewood for us, 1 water for us, and 1 food for us.  '
[EX A]: No

[EX Q]: Context: 'Great, that sounds good to me, are you okay with keeping all the food or would 3 be too much?' 'I'd be ok with keeping all the food. I do eat a bit too much and if for some reason I get lost it would be helpful to have!' 'I agree with that, so you would get the two water and three food and I would get one water and three firewood?'
Utterance: 'Yeah. If that's alright with you? It rained here recently but I bought a top of the line tent and sleeping bag so if I do run out of firewood I'll still be ok.'
[EX A]: Yes

[EX Q]: Context: 'Hi, I am looking at extra items for my camping trip and would like to have 3 firewoods, 3 foods and 2 waters.'
Utterance: 'Hey, I am excited to go camping too!  Would you mind sharing your top priority items with me so that we can come up with a fair deal?  Ideally I would love 3 firewoods, 3 foods, and 2 waters just like you aha.  But perhaps we can each get at least 3 packages of our highest priority item '
[EX A]:
No

