Participant mturk_agent_1's preferences:
value2issue: Low: Food
Medium: Water
High: Firewood
value2reason: Low: Food is something I can go long times without and can even find in nature.  I can collect it or fish or hunt for it.
Medium: Water is the easiest and quickest way to die.  Dehydration will sap me of energy and prevent me from having a good time or even surviving.
High: Firewood allows me to cook food and boil water, so it's very versatile.  Helps me with my other needs.

Participant mturk_agent_2's preferences:
value2issue: Low: Food
Medium: Water
High: Firewood
value2reason: Low: I might not have enough food for two people when my friend joins me. 
Medium: One of my water packages had a leak and while, normally, i;d be fine, I have a friend that's coming last minute to join me.
High: I accidentally spilled some of my water on the firewood and I'm worried the wood will not dry in time. 

Negotiation dialogue:
mturk_agent_1: Hi, I'm really interested in the firewood.  Not so much the food.

mturk_agent_2: Hello, so am I. What were you thinking?

mturk_agent_1: So your top priority is firewood and your bottom priority is food?

mturk_agent_2: Yes

mturk_agent_1: ☹️ That's too bad, but I'm sure we can work something out.  Firewood is really helpful to me because I get really cold and can use it to cook food and boil water.  What about I get 3 firewood, and then you get 2 of the other two?

mturk_agent_2: That doesn't work for me. I need at least some of the firewood because mine got wet. I'm worried that the wood i do have won;t dry in time to be useful. ☹️

mturk_agent_1: Hmm, okay.  Well how about this instead.  You get 2 firewood, since that's your most desired and you want to dry your food (makes sense!), and then I'll take 2 water and 2 food, since I'm taking a haircut on the firewood.

mturk_agent_2: That sounds like it could work. I wasn't too concerned with the water or the food. If you're sure, I'm willing to take your offered deal🙂

mturk_agent_1: Okay, I think that sounds like it works for both of us.  I can find a way to make do with less firewood.  The food and water can give me the energy I need to collect more.  I'll propose this offer next time or you can propose it now (if possible).

mturk_agent_2: Alright, I can definitely make do with two firewood packages, 1 water package and 1 food package. Thanks for understanding!

mturk_agent_1: Submit-Deal

mturk_agent_2: Accept-Deal