Hello, I'm going camping today and I can't wait!
Nice, so are we!
That is awesome! The one bad thing about my campsite is there's no stream or lake nearby. I'm going to need a lot of it so I can shower/wash up
Well I was hoping to grab some extra water as well, Its suppose to be record highs. 
I'm sure we can figure something out. I'm going to need a good amount of firewood too to cook my food. The good news is I won't need any food 🙂
Well I'm not interested in any firewood, I already have plenty, I do need extra food however
Would you accept 1 water, 1 firewood and 3 food?
I do believe that will work for me.
Alright perfect. I appreciate the quick and easy negotiation 🙂
Sounds like we have a deal!