Hello there.
hi
So I plan to go hiking a lot this trip and I would appreciate a majority of the water and firewood if possible.
I want to go on hiking too. Since I don't go alone I need food and water.
I would be willing to sacrifice the majority of food in exchange for water and firewood.
This offer is good for me but I need some water too. Can we share the water and have all the firewood? 🙂
No, I offer you 3 food, and 1 water.  I would like 2 water and 3 firewood.
Well this is perfect for me. I agree with 3 food and 1 water. Do you also agree?🙂
Sure that sounds fair to me, we both get what we need.🙂
Then is a deal! Hope you have a good trip!