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: 'Okay, well if you need water and firewood, that only leaves food. If you can part with extra food, here's what I'm proposing' 'Yes you can definitely have all the food. Maybe 2 firewoods and 2 waters for me?' 'Sounds good to me.'
Utterance: 'Ok great would it be ok if we have 1 of the foods?'
Example Output: No

Example Input: Context: 'I really need some more food. I only have the basics, and I'm afraid it's not going to be enough. What about yourself?' 'I really need water because I take medication that requires drinking a lot of water. The firewood I dont need to much off and I need very little food as I am dieting. lol 🙂' 'I totally understand that. And it's pretty important, lol '
Utterance: 'It sure is..So how much food do you need for the trip? Do you need firewood to cook the food? Thank you for understanding my issues. 🙂'
Example Output: No

Example Input: Context: 'I am hoping that I can get a little extra food though....I'm taking these new meds and they seem to make me hungry all the time. I was hoping to get another 2 pieces of food from the supplies.' 'okk i will give 2 pack firewood and 1 pack of food, 1 pack of water ' 'I wouldn't mind another firewood, if it isn't a bother...I tend to get really chilly when it's nightfall.'
Utterance: 'ok what to you need explain'
Example Output:
No