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 elicit-pref strategy, otherwise output No. elicit-pref is a cooperative negotiation strategy. It is used to discover the preference order of the opponent in the negotiation.

Ex Input:
Context: 'I am doing very well. Have you planned your camping trip?' 'A bit and you? I'm looking forward to figuring out a deal that helps us both!' 'That's great. 🙂 We are planning to prepare food over a fire.'
Utterance: 'Nice! What are your highest priority items?'

Ex Output:
Yes


Ex Input:
Context: 'Hi, it is nice to be going camping. I do not have a very good sleeping bag and I can get cold at night. It would be nice to have extra firewood. I dont eat much so I do not need much extra food. Would you be willing to give me two packages of firewood for a package of food?' 'I enjoy camping as well. However, my campsite seems to be a bit chilly at night. I'd be willing to part with some firewood, yet I'd need quite a bit of food to compensate. I also have a stream nearby so water is plentiful if you need that as well.'
Utterance: 'I may be able to do something with regards to food. Do you have enough water?'

Ex Output:
Yes


Ex Input:
Context: 'yes we can' 'Ok, could you tell me which item you need more and which one you need less?' 'i will be needing more of water '
Utterance: 'Okay, what I need most is food because I need nutrients, could you tell me what is the least you need?🙂'

Ex Output:

Yes