Hello, how are you doing
Great, excited to go camping!
Me to.  I have a unsually high metabolism.  I need the extra food.  Is it alright if I take all three of those in exchange for some of the others?
I would like at least one package of food, but I can cook fish I catch of I can take all three of the waters and two of the firewood. 
I think that sounds fair to me.  So I would get 3 Food, and 1 firewood?  I can search for lake water and boil it for clean water
Yes, and I will take 3 water and 2 firewood. Are you sure? 
I think that is fare to me.  Any medical issues that make you need so much water?
I get dehydrated easily and have problems with fainting. I also need it to wash my clothes. 
I guess I will wash in the lake or pond, lol
Well, it sounds like we have a deal. Thanks for the negotiation!