Hi there, how are you?
I'm good how are you doing?
Great, hoping we can make a deal. I'm in need of more food, is there anything you need?
I could really use some more water 🙂
Sounds good, I would be happy to trade you all the water for all the food. Would that work?
That would be good but how should we devide the firewood?
Hmmm.... let me think, it can't go 50/50 :-(
Lets see. I already have a bit of firewood so how about i take 3 water and 1 firewood. Then you can have 3 food and 2 firewood?
Are you sure? That's very generous! 🙂
Yea that way we both get what we need! 
Thank you so much! Let me submit a deal to you. 
Sounds great!