Hi, I'm so excited for my camping trip.
Hello, I will submit the deal now.
what do you need most? we can figure out a good deal for the both of us
I think that water might be a primary concern for me.
ok, it's a little up there for me but I can definitely give you more water. I just need a lot of firewood.
Ok, I will get 1 package of fire wood and you would get 2 and I'll take 2 packages of water and you could take 1.
that works. 
Also, do you need more packages of food?
If I could take 2 packages of food that would be nice.
Ok, that will work.