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.

Ex Input:
Context: 'i willing to swap some items for others, but we have to work togeather on it' 'ok friend how this deal 2 pack of all.?' 'two pack to who you or me?'
Utterance: 'for me. 2 pack of water 2 pack of fire wood and 2 pack of food. '

Ex Output:
No


Ex Input:
Context: 'That's fair, but I have wiggle room on the water, how about I take two food, two firewood and you take 3 water, 1 food, 1 firewood?' 'Is there anyway you will go with that I get two firewood? I need food the most but since you get most of that can I get most of the firewood? So 1 food, 2 firewood, and 2 water for me?' 'You drive a hard bargain. I could really use that firewood. It's going to get cold tonight and these sleeping bags are not worth the price I paid ;)'
Utterance: 'Haha, I know but I am in the same situation! ☹️ and since I am getting less food I feel like it is fair I get on more firewood since I truly need that 🙂'

Ex Output:
No


Ex Input:
Context: 'Hello. I'm looking forward to striking a deal with you that makes both of us happy!' 'Sure I am waiting too!' 'So tell me, which is most important to you? What can't you live without?'
Utterance: 'The most important is water because I have kidney problem so i need some more water.Without water I can't live.'

Ex Output:

Yes