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 to get food as high while water is low.'
Utterance: 'Ok, I have enough food, but I need firewood to keep warm and water because one of my containers leaked.  So, why don't you take all the food and I get everything else.'

SOLUTION: Yes

PROBLEM: Context: 'Hello' 'hello, so what is your most important thing that you want? ' 'my priority is firewood. What's yours?'
Utterance: 'me and my gals thing that firewood is important also but we actually want water'

SOLUTION: No

PROBLEM: Context: 'Hi, I brought some water with me. How much do you need? '
Utterance: 'I want 2 liters of water'

SOLUTION:
No