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.

Context: 'Hi there! How are you?'
Utterance: 'Great! I'm very excited to go camping, how about you?'
No

Context: 'Actually, I think I may need more food than water. How about I take the food and we can split the water. You may have 2 waters, if you need them.' 'Sure then. You can take all the food. It's not really a priority to me. ' 'Great. So if I have three food and one water, you can have three firewood and two water. Would that work for your trip?'
Utterance: 'That's perfect for my camping trip. '
No

Context: 'Unfortunately it is impossible as we are already on site compared to you about to head out. ' 'I see. You are a victim of poor planning. Whereas the refugees I attend to are the victims of greed, malice and human suffering. What are you proposing?' 'How about I take 2 packs of water, 2 packs of food and 1 firewood'
Utterance: 'Impossible. I will need to cancel the trip altogether.'

No