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: 
Utterance: 'hello'

SOLUTION: No

PROBLEM: Context: 'Would you be willing to trade a piece of firewood for an extra water bottle? That will save me some time from chopping down extra wood.' 'no, best i can offer is i get 3 firewood, 2 water and 1 food' 'No thanks.☹️'
Utterance: 'ok, last deal, i get 3 firewood, 1 water and 1 food'

SOLUTION: No

PROBLEM: Context: 'That's so nice of you! I would be delighted to have some great meals during this camping vacay. 🙂🙂' 'I have managed to bring pouches of some of my favorite seasonings.  I'm hoping to find some great wild mushrooms in the forest too.  ' 'I'm a big fan of well seasoned food and mushrooms! Mmm.. 🙂 Do you think it would also be alright for me to have 2 of the 3 waters since I will be hiking a lot?'
Utterance: 'That would be fine.  I was hoping to have 2 but since I am only walking and you are doing more heavy duty hiking, you take them.  Agreed?'

SOLUTION:
Yes