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: 
Utterance: 'Hello! I would like make a deal with you on firewood, water and food! Are you interested in any items ?'
No

Context: 'I could do one firewood and all the food?' 'And I would get all the water?' 'How about you get two firewoods and two water, and I take the rest?'
Utterance: 'No I think I need all the water. I'm in the desert and there's absolutely no water supply. '
Yes

Context: 'mind your words mr. i am in some trouble that's why i ask you this help. its not good man' 'Ok I am going to say this once before we both get nothing, I will get 3 Firewood, 2 Water and 0 Food. You will get 3 Food, 1 Water' 'i am also need firewood friend because we are going to snow fall place so i need at least 1 pack of fire wood '
Utterance: 'wait friend  i need fire wood must. how we all are live in the place please understand my situation '

Yes

