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: 'Hello! How are you today?'
Example Output: No

Example Input: Context: 'Would I be able to take 2 firewood and 3 waters and then you take the res?' 'Yes' 'It sounds like we are going to have a really good weekend!  I'm pumped up!  We'll have enough firewood to keep warm, lots of water, and food as well!'
Utterance: 'Excellent'
Example Output: No

Example Input: Context: 'I need the firewood and the food, you can have all the water.'
Utterance: 'no i need firewood to always keep myself warm.'
Example Output:
Yes