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: 'In this extra package I need two food' 'wow that is a much' 'because of my big size I want two extra food package '
Utterance: 'i will give you that in exchange for 1 food and 3 water with 2 firewood'
[A]: No


[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: 'Hello, the trip sounds like it will be a lot of fun.  What is the most important essential package for you and your family?  I know we didnt bring a lot of food so I am looking for more of that than anything else.' 'Yes! Hope for lot of fun. Is there any special deal can you offer for maximum order.'
Utterance: 'What item are you looking for the most of?  '
[A]:
Yes