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.

[Q]: Context: 'Hi there, good to connect with you. How are you today?'
Utterance: '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.🙂'
[A]: Yes


[Q]: Context: 'I have a lot of water around me I can use. So I can give you a lot of extra.' 'Ok nice I will give you 3 food if you give me 3 water' 'OK, that works for me. But I would like a lot of firewood. I like to hunt and cook what I kill.'
Utterance: 'Ok I will give you 2 firewood '
[A]: No


[Q]: Context: 'Sry for the extra emoticons, laptop's glitching apparently. Well, what can you give me or we come to a deal on? 🙂' 'Well, let me think on that.  Why do you need so much water for a starter?' 'I get dehydrated easily. I need to water so that doesn't happen. 🙂'
Utterance: 'Hmm.  And why do you need so much food?'
[A]:
Yes