Hi, how are you? 
Am fine what about you?
Good thanks! So I'm hoping I can get all of the Food, but am willing to negotiate on the other items. 
Ohh food?.Thats a very essential property over here.I mean very important.Do you really need it that bad?
It's my top priority, but if you need some, I'd need more water and firewood
It aslo my top priority but i would not if u give me 3 packages of water and  2 firewood in exchange for all food.Agree?
sure that works
Okay deal sealed?
yea good with me. 3 food 1 firewood for me. 3 water and 2 firewood for you
ok deal