TASK DEFINITION: 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.
PROBLEM: Context: 'Hi there, good to connect with you. How are you today?' 'I am good, thank you.  What are your preferences? I really need the extra food packages.  We are doing a lot of hiking and mountain biking and there are no grocery stores for at least 50 miles.🙂' 'Oh wow that is quite a lot of hiking! I think we will be hanging out a lot overnight and so I am looking for more firewood if possible. My kids can't hike very far and want to do more with smores and marshmellows. '
Utterance: 'I can work with that.  I am willing to give you all of the firewood.  We are in a hot climate and won't need too much.  Being in a hot climate and with a lot of exercise, I am hoping to take the three water packages. '

SOLUTION: Yes

PROBLEM: Context: 'sounds good. but how much firewood will i get ? because i don't need it much' 'Do you want to trade firewood for food?' 'yeah, am trying to make trade but not for firewood, for water !☹️'
Utterance: 'I only need water right now. so is the 2 water, 1 firewood ,and 1 food package still good ?'

SOLUTION: Yes

PROBLEM: Context: 'I will need 2 firewood, 2 water and 1 food' 'How about you take all the firewood because I have the skills necessary to chop down more. I also will need three packages of food because I will be climbing a very tall mountain.'
Utterance: 'well i do need alot of firewood since i need it to start a fire'

SOLUTION:
Yes