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.

Q: Context: 
Utterance: 'HI! Are you excited to go on this trip?'

A: No
****
Q: Context: 'Well, I think that for us staying warm is more important than having extra food. What if I took extra fire wood and you took extra food?' 'That could work, were not really looking to have a big fire' 'Where do you stand on water? We're low , and may need extra in case the fires go out of control'
Utterance: 'I do need some myself as well'

A: Yes
****
Q: Context: 'I think we'll both need each of the three items, but we can't split them evenly. How about I take 2 waters, 2 firewoods, and a food. You can have two food packages, a water, and a firewood.' 'hi bro, 2 water for 2 firewood 1 food for me'
Utterance: 'Do you need the extra water? I get super thirsty and I'd be willing to give up another firewood to get an extra water, while we still get at least one of each.'

A:
Yes
****