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: 'Hi. Why do you need so many food packages?' 'Well, I have two teenage boys who will be with me.  In normal circumstances they go through a lot of food.  While camping, hiking and kayaking I know we will need plenty to keep their energy level high to do everything.🙂' 'Well I will definitely need 2 packages of food and 2 of firewood for survival.'
Utterance: 'I am definitely ok with giving you two of the firewood!!  Why do you need 2 packages of food?'

Ex Output:
Yes


Ex Input:
Context: 'Hi, I really need water to stay hydrated during my camping trip because my food supplies are low. Do you have any to spare?' 'Hi.  I can't do that right now.'
Utterance: 'Is there anything that you might need? '

Ex Output:
Yes


Ex Input:
Context: 'Hi! I've made some mistakes so I need some extra supplies. ☹️ Which item do you need the most?' 'I need water the most we are campin  in arizona how about you' 'Oh no. I need water the most too!'
Utterance: 'well this should be intersting what do you need second most?'

Ex Output:

Yes