Hi! How is your camping trip going?
It's going good we could use some more supplies such as food and firewood, though.
Same here haha. Is water your lowest priority item too?
Yes. We think we have enough water for now.
Same here! I am in need of food more than firewood however as I am very hungry. 
Me too. We have a bigger family and we will run out of food if we don't get some more.
Since it looks like we have the same value ranking for our needs, how would you like to try to make the deal?
Well let's try to make this as fair as possible.🙂We could get 2 packages of food, leaving you with 2 extra packages of firewood as well as water.
Sounds great to me! So I will get 1 food, 2 firewood, and 2 water. That sounds very fair 🙂
Yes. I'm glad we were able to come to an agreement so fast. This is great!🙂