Hi I need 2 packages of  food and water and 1 of wood
Hey, I could really use the extra water package, is there a specific reason you need extra food and water?
I have kids with me that's the reason I need extra water and its summer
I can give you all three waters if I can have 2 foods & all 3 firewood.
It will be really hard to survive if I give you all 3 waters since all the packages are essential. 🙂
Do you have another deal you'd be willing to make?
It would be really hard for me  . please consider my deal 
Would you take 2 waters, 1 food and 2 firewood?
My preference is 2 waters, 2 food and 1 fire wood
I'm sorry but I just won't be able to do that. 
as you know it won't be beneficial if we break the deal
I understand, as well as you do I'm sure.
I will take  2 food 1 water and 2 firewood
Sounds great. I'm glad we come to a deal.
Great🙂