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: 'Yes, you're very kind. I desperately need some more water and firewood.' 'I'm glad we were able to work out something for both of us! I hope you have a great camping trip!' 'Sorry, just adjusting the numbers to what we agreed above! '
Utterance: 'My mistake, hypothermia is messing with my brain.'

Ex Output:
No


Ex Input:
Context: 'if i accept the deal, how much will i get ?' 'You get 1 water 2 firewood and 2 food packages.' 'i propose, 2 water, 1 food and 2 firewood to you, is that good ?'
Utterance: 'Sorry I can't do that 1 water is not enough for me. '

Ex Output:
No


Ex Input:
Context: 
Utterance: 'Hello, what are your preferences for extra supplies?  I am greatly in need of food and water.  We will be doing a lot of activity in a hot, dry climate.🙂'

Ex Output:

Yes