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: 'I think that will work. ' 'Ok, great!🙂 Just to recap, I'll get 2 water, 0 firewood, 2 food, you get the rest.' 'That's right.  Thanks for making this part of planning for the trip easy'
Utterance: 'same to you, enjoy the trip'

A: No
****
Q: Context: 'Hi! I'm super excited to go camping with my family as a great way to vacation due to Covid19. My kid is so restless from being cooped up in the house all the time. Are you planning on going camping too?'
Utterance: 'I am! It is the perfect way to get away and still manage to social distance! I am worried about having enough water though, are you short on any supplies?'

A: Yes
****
Q: Context: 'Hello there, I'm trying to get some more water. I take medication that makes me dehydrated. Is there something you mite be looking for in exchange?' 'I'm sorry to hear about that -- I've been needing water because my child is with me and I can't let them get dehydrated since they're so young. Could we split the other items?'
Utterance: 'We mite can do that. What do you need more of?'

A:
Yes
****