Hello! We're going camping and need some additional supplies. The primary need right now is firewood! We can spare water, but some additional food for the six kids is needed!
Wow. You took six kids on this trip? I would say you will definitely need food!
Yup! But we did think ahead and ordered extra rations for them. Food is second priority, so maybe we could have 2 of those? You could have all of the water rations.
I definitely need water but I didn’t bring enough shelter. Thus, I will need to keep my fire going. 
We have a shortage of trees in this area. Could we split those up evenly? I think that would be fair. Something like 2 of each with you getting the most of the water.
I really need some firewood. 
Yeah, that's priority #1 for us as well. If I give you one, could you give us most of the food and water then?
I definitely need one firewood. I can use either one more water or one more food. I will leave up to you. 
Gotcha. I could hand over a package of firewood, 1 food, and water as well. Maybe we'll try out a suggestion and see if it works for both our families.
I will take one firewood and one food. I will give you one water.