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.

Context: 'Looking forward to doing some serious hiking with the family. bad luck on the way here we flew in and the airline loss or bags with some of our supplies and sleeping bags.☹️' 'oh nooo, that's terrible. do they know where they left them?' 'I think they went to Chicago. I really needing replace our lost water and sleeping bags. I see there are some extra supplies to share. I could really use the water and firwood. 🙂'
Utterance: 'oh yeah, you definitely do. we have all of our stuff and mostly wanted to hike and have picnics during our camping trip '
Yes

Context: 'Okay, well firewood is also my top priority since it will be so cold tonight. But I would be willing to take only 1 firewood (and give you 2) as long as I got 2 foods and 2 waters ' 'Thank you for the offer on firewood. I think that sounds fair. However, I really would like at least 2 waters as well. ' 'Hmm unfortunately I can't budge since I would be accepting less of my top priority item. It sounds fair to me though; I'd get 5 items in total but less of my top priority and you would get 4 items in total but more of your top priority'
Utterance: 'Well, how about if I take 2 firewoods and all of the food and you can have all of the waters? I have a device that I can make clean water, but will need more calories to do so! 🙂'
Yes

Context: 'Hello 🙂What would you like to do with this deal?'
Utterance: 'My friend ended up having a medical emergency and couldn't go to the store when I asked her to get food. Because of that, I would like 3 food packages. I had to go help her with the medical forms and didn't have time to shop'
No