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: 'That sounds fair.' 'How are you on food? ' 'I need extra food. I have recently  been ill and my doctor has prescribed extra calories so I can regain my strength.'
Utterance: 'I’m sorry to hear that! If there are 3 packages of food please take 2 of them. I could stand to eat less!'

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 would like all the firewood and two packages of water. You can have the rest.🙂' 'I want all of the water, two firewood, and one food.' 'Why do you need all the water and little food?'
Utterance: 'I need to stay hydrated because the weather is hot. I am trying to lose weight so I do not need much food.'

SOLUTION:
Yes