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: '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'

A: No
****
Q: Context: 'That's good to hear, you always have to be careful with wild water though, it has all kind of germs. Sounds like you'll have plenty of dry firewood though. ' 'Yes, I would be willing to let you have all the firewood for 2 of the cases of water.  How much food were you needing?' 'I like your water and firewood arrangement. Can I have 2 of the food since you're getting 2 of the water? '
Utterance: 'Let me think on that. I know there won't be much for berries or small animals to hunt for.  Is where you are going have much available for you to hunt and scavenge for?'

A: Yes
****
Q: Context: 'Hello! I am looking to get more items for the trip.' 'Hello there. I am as well. What items were you looking for specifically?🙂'
Utterance: 'I am looking for one of each. Food I am especially looking for.'

A:
Yes
****