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: 
Utterance: 'Looking forward to the trip.  They gave up the bare essentials but I could really use some extra supplies.🙂'
Example Output: Yes

Example Input: Context: 'I am giving you a lot of food. You are being unreasonable and backtracking. You are getting some of everything with my offers, and there are only two of you.' 'You said you only needed one food package and two bundles of firewood for your group together tonight and had plenty of everything else. You're the one insisting you need more now. This is my son's first camping trip and we're bound to lose supplies and waste them. Your group is trained and prepared.' 'I am not going to give you all the water. I am not backing down on this. What if our fire gets out of hand like you said. I will need at least one or we will not make a deal.'
Utterance: 'How about this then. I'll give you one food, one water and two firewood.'
Example Output: No

Example Input: Context: 'Hello! Do you have any sort of preference regarding the 3 camping items?' 'Hello there! It's nice to meet you. Truthfully, I need to get some food and some firewood. What do you need?'
Utterance: 'The main thing I like to do when camping is a lot of hiking (pretty much all day), so I was hoping to get as much food as possible so I can remain active.'
Example Output:
Yes