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: 'Awesome. I couldn't agree more. I feel that camping and hiking are both such spiritual experiences. It's such a perfect time to connect with our lord and savior. I love serving others as well.🙂' ':) Yes and you know what we are experiencing some difficulty as some people who said initially they were not going to be able to come and at the last minute are saying that they are coming so we are short on the most important items which are food and was wondering if we could speak about sharing items but due to the people who joined late if I can get food and water you can have more wood as none of us know how to really go into the wild and we do not want to turn away our last minute guests, it would be of tremendous help   ' 'I'm more than willing to help you to the best of my ability. I understand and appreciate the difficult situation you find yourself in. How many packages of food and water do you think you will need for your additional guests? How much wood do you need since you are saying you don't need much?'
Utterance: 'Thanks for your understanding well I think if possible then to meet the situation then how bout 3 food and 2 water then you get all the wood ? That way you can have awesome campfires lasting through the night, we will be going to sleep extra early to wake up very early so we do not need all that wood, as much as we need food to replenish our energy and be ready for another day of long walks to see as much as we can from nature 🙂'
Example Output: Yes

Example Input: Context: 'ok, fair enough.  How about I take 2 firewood as 1 should do you for a couple nights. I also have small children with me and would like to have the fire burning at all times to keep the bugs away. ' 'I really dont see giving up that much of the wood as I cannot risk running out myself. We are camping way too far out to get access to additonal lighting. I tell you what if you will let me have 2 of the fire wood I would be willing to give you two of the food items. I know that racoon probably took your food as well!!' 'Okay that is a deal. I would like 3 water as well because my campsite water is very dirty. I would like to have bottled water to take my medicine with and we forgot to pack it.'
Utterance: 'I may consider 2 waters as we are going to be hiking up the tallest mountain in North Carolina and they say temps may reach 100, I must have some have at minimum of 1 package of water.'
Example Output: Yes

Example Input: Context: 
Utterance: 'Kindly understand our need as we are struggling with hunger now.'
Example Output:
Yes