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 doing great. How about you.?' 'Really good.' 'Which option you would like to go for?'
Utterance: 'I am most interested in the firewood.  How about I take 2 firewood 1 food and 2 water'
Example Output: No

Example Input: Context: 'How's it going?  If it's alright with you, you can have all of the water and I'll take all of the firewood.  We can work out a deal on the food as well.' 'I have circulatory issued due to a heart condition and cold quickly. I would appreciate if I could get at least 2 of the firewood. You can have 2 of the food so you won't get hungry. 🙂'
Utterance: 'I was planning on building a big bonfire for the evening.  There'd be plenty of room if you wanted to join for warmth.  I'm a bit hungry and would appreciate the extra food.  You can have all of the water if you'd like.  If you warm it by the bonfire, it may be useful to soak in to improve your circulation.'
Example Output: Yes

Example Input: Context: 'so I'll get 2 water, 3 food and 0 firewood?' 'Incorrect. ' 'In order to make it work I need at least 3 water and 2 food. Or I could do 3 firewood and 2 food and 0 water. I don't see any other way around it'
Utterance: 'It has to be fair. Right now I don't think you are being fair. The last offer I gave was great for you. You all all of the food and 2 water.You wanted 3 food in your last offer so thats a great offer I suggested.'
Example Output:
No