I am looking forward to my upcoming camping trip, but I will need a few more supplies. How about you?
Yes!  I will need some too.  I am hoping we can come to an agreement on the limited supplies.
Well, I have a child who will be quite thirsty after running around the campsite, so water will be important to us. 
Oh, that makes sense!  I am pregnant and will mostly need firewood since I will be staying a few days longer than anyone else. 
That makes complete sense. I am fine with you having more firewood.
Oh thank you!  You are so kind!  I am glad to give you all the water you need since I will be camping near a stream and can collect and purify the water from there.
Perfect! When it comes to food, what are your needs?
I would prefer to have 2 portions, since I will be extra hungry eating for 2.
I think that sounds reasonable to me. 
Ok, so then I would get 2 portions of food and you would get 1?  🙂