Hi, how are you?
Good, hope your doing well. I believe we are talking for the supplies. 
Yep! What are you most interested in?
I believe that I need most of the food because I eat a lot to begin with but everything else is negotiable
OK makes sense. You can have all the food, but I'll need 3 water and 2 firewood
I think I need water also, you know, just in case. What about 1 water and you can have all the fire wood  
OK I can do that
Alright, so your going have 3 firewood and 2 water and I get the rest. Sounds good? 
Yea that works! 
Cool, if you want to enter the deal you can go ahead