Hey, I was thinking that I would get 2 firewood and you can have 2 food and 2 water. What do you think?
lets talk about it. why do you need two firewood? 
I'll be camping with my young kids and I want to make sure that we are warm enough in case it's colder than expected.
thats a valid point - i suppose kids do need more warmth
Would you be ok with taking the extra food and water?
yes I think that would be a workable solution. i like your compromise. 
Awesome, I think that's fair to both of us. Do you want to go over anything else?
I think that maybe we ought to talk a bit more - I know we cant do a deal yet. 
I'm glad we are close to a compromise. I think we can both benefit and have a good camping trip.
absolutely - it will be a great camping experience for us all