Hello I would like to get firewood and food for my 10 kids. I want to make them a great meal. 
Hello... I would like food to bring hiking. I am diabetic, and if my blood sugar levels fall, I can have a medical emergency.
Oh no that sounds terrible. I will be willing to give you two of the food then If you give me two firewood and water
Thank you. 🙂 So you want one food, two firewood, and how many waters?
two waters please my bad for the wording
How about one water? I will sweat a lot on my hike 
But then you get more items than me. I'm already giving you your top thing give me some compromise. 
What if you have all the firewood, and I get all of the water? You will receive more of a higher value item
I'll take all the firewood and two waters and you can have all the food. I think that's a good deal for you. 
I think that is fair 🙂 You told me you wanted two waters, but tried to keep all three 😡