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: 'Hello! How are you doing today?' 'I am doing great' 'Great! For our camping trip, I would love to take all the water and firewood. You can have all the food. '
Utterance: 'I really need the firewood,  It gets very very cold at night where I go camping.'
Example Output: Yes

Example Input: Context: 
Utterance: 'Hello, how are you? 🙂'
Example Output: No

Example Input: Context: 'Hi' 'Hi! 🙂' 'So what are you thinking about how we should split this? i really want firewood, as i am anemic and have a hard time in the cold weather during the nights here'
Utterance: 'Well, I need to keep some firewood for myself too, since it'd be cold outside. But I'm willing to trade more of it for food, since I'm iron-defcient and have family to feed!🙂'
Example Output:
Yes