What are your highest priority items?
Hi, I could really use additional packages of food.
Nice I could really use some firewood! I'd be willing to give you all the food if I could get most of the water and firewood. 
I could definitely give you all 3 bundles of firewood, in exchange for 3 packages of food. I would be willing to give you 2 water, if you can give me 1
Yes that sounds like a good deal for all parties. I will send the offer when it's available. 
Ok, looks like we need to hit a couple more back and forth conversations before it is available to submit. Do you want to just confirm what you will be entering for your deal?
Ya sounds good. I will get three firewood, two water and zero food. You will get zero firewood, 1 water, and three food. 
That's perfect. I have no complaints about the deal
How are you doing this fine day.🙂
Doing great, thanks for asking! I'll go ahead and submit the deal as we agreed upon. Pleasure working with you!