Hi!  The weather is going to be a lot colder than I anticipated, so I need extra firewood.  Would you be willing to give some to me?
Sure, but I need 2 packs of firewood and 2 packs of food and water
That doesn't really sound fair to me ☹️
How much food do you need?
I would like 1 or 2
OK
Could I have 2 firewood?
Ok
How are you with your water supply?
I need one pack of water to survive and will boil water using the firewood.