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: 
Utterance: 'Hi!  I want some additional packages of firewood, water, and food'

A: No
****
Q: Context: 'I am a big eater. I tend to eat a lot throughout the day. You? 🙂' 'Ha I get that! I'll need that too, but mostly water because my family wants to do a lot of hikes.' 'Thirty I see. No problem, we'll work something out. 🙂'
Utterance: 'Do you plan on having lots of campfires?'

A: Yes
****
Q: Context: 'I need food because I have mouths to feed and maybe a firewood?' 'Okay . How much You need each?' '3 Food and 1 Firewood? You get the rest?'
Utterance: 'That's fine.I will accept your deal.Tell me the reason why you need the item?'

A:
Yes
****