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.

Example Input: Context: 'I'm going hiking, and I really need food, it works up an appetite.' 'Well I didn''t bring any with me so I really need two.  I am willing to give you 2 waters.🙂' 'I also need the water, because it's not safe to drink from streams here.  '
Utterance: 'You are right, my water is dirty also but I am willing to let you have all three water. I would rather eat, so I would like 2 food.'
Example Output: Yes

Example Input: Context: 'for me. 2 pack of water 2 pack of fire wood and 2 pack of food. ' 'I gotta have one extra of the food or wood at least if you want two water' 'i already reduce my package in water. now what can i do? in my group my wife is cansive and one kid and a old man he is sicked person. so i need this package friend. please friend'
Utterance: 'well. I may be willing to give you two water but i need to have two firewood to boil up some of this lake water to try to drink'
Example Output: Yes

Example Input: Context: 'Hi there!'
Utterance: 'hello !🙂'
Example Output:
No