TASK DEFINITION: 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.
PROBLEM: Context: 'I have an extra person camping with us that I didn't expect when I bought food, so I could use one if you're willing 🙂' 'I understand that! I wasn't expecting to stay an extra night, but the weather is too perfect to leave. I can manage with two packages of food for sure. 🙂' 'Great! Thank you for being so understanding!'
Utterance: 'No problem! So are we in agreement that I get 2 food, 1 water and you get the reverse? I could also probably use one firewood, but it's not as important to me.'

SOLUTION: Yes

PROBLEM: Context: 'I have more water than I need. How is your water supply?' 'I could use some more water as I get dehydrated easily. Since you have enough, I could give you and extra package of food for your water.' 'That sounds like a deal, what would you like to do as far as the firewood goes?'
Utterance: 'I really need to keep warm with my not so good sleeping bag.☹️ I would be willing to do this. I get two packages of firewood and three packages of water and I will give you two packages of food and one package of firewood. You have plenty of water so you will not miss that.. '

SOLUTION: No

PROBLEM: Context: 'I think so too. I have a medical condition - type 1 diabetes - that makes it important to bring extra water and food. I'd like to request more of those two items.' 'I don't have a problem with you having extra water. I'll give you all the water, if I can have all of the firewood.' 'I think that's more than fair. That only brings up the food to be divided. One of us is going to have to take less.'
Utterance: 'I'd be fine with taking less food. So, I would get 3 firewood, 1 food, and 0 water. Is that correct?'

SOLUTION:
Yes