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 might be able to get by with just two... I'm on a diet though, so I don't need as much food.' 'That's a relief. I actually have a friend joining me and they don't have their own food supply. I don't have enough for two people.' 'You can all the food if you need it.🙂'
Utterance: 'Thanks!🙂 Do you need any water packages?'

Ex Output:
Yes

Ex Input:
Context: 'absolutely! the kids are absolutely looking forward to it. It's their first time' 'Yeah! we are going hiking after we unpack. We need a lot of water...' 'So do we. My kids are on meds so they need a lot of water and food'
Utterance: 'Which one do you prefer most?'

Ex Output:
Yes

Ex Input:
Context: 'Hello, I am very cold and need food and wood to remain warm. How about I get 3 firewood, 3 food and 1 water?' 'That doesn't really work for me because then I would get only 2 waters and nothing else ☹️. What do you think is your highest priority?'
Utterance: 'Wood is my highest priority. I need it to stay warm. I'm very cold-natured. What is your highest priority? 🙂'

Ex Output:
Yes