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 self-need strategy, otherwise output No. self-need is a selfish negotiation strategy. It is used to create a personal need for an item in the negotiation, such as by pointing out that the participant sweats a lot to show preference towards water packages.

Context: 'Hello there.' 'hiii'
Utterance: 'So in order to fully enjoy my on this trip while surviving, I will require mass quantities of food.'
Yes

Context: 'i have some spare cans but i am not too worried about it.  its a low prioirty for me ' 'How about your water?  Won't you be going through a lot of water where you are going?' 'i am good on that,  i dont think i will be but its second on my to do list'
Utterance: 'Are you willing to take 1 firewood and 2 waters?  I also don't need the food.'
No

Context: 'Okay . How much You need each?' '3 Food and 1 Firewood? You get the rest?' 'That's fine.I will accept your deal.Tell me the reason why you need the item?'
Utterance: 'Food for the family, and firewood is a good tool to purify water and cook. Also wanted to make a win-win deal'

Yes