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: 'Like i said food is my top priority so i will not do well with less than 2.' 'Then you get two food and no firewood here.😮' 'You mean you can't let up one firewood for me?'
Utterance: 'Not this time, I really need all the firewood and food is a large need for my family of 8. We need the firewood to cook all our meals from the animals we hunt since we are short on food.'

Ex Output:
Yes

Ex Input:
Context: 'hello'
Utterance: 'Hello how are you, I was wondering if its okay with you, If i can get 3 waters, 2 firewoods, and 1 food? what are your thoughts?'

Ex Output:
No

Ex Input:
Context: 'I am doing good. How about yourself?' 'I am great, i am really excited about going camping, how about you?' 'Yeah, I want to make sure i am prepared. What do you think are the bests options?'
Utterance: 'Well i would really like to have extra firewood since i am afraid of the dark and i don't need extra water so i was hoping you would want to trade that'

Ex Output:
Yes