Participant mturk_agent_1's preferences:
value2issue: Low: Firewood
Medium: Water
High: Food
value2reason: Low: We may need additional firewood if the weather changed 
Medium: Had to extend the trip and can use the extra water
High: The food items were left in the car on a hot day and it went bad

Participant mturk_agent_2's preferences:
value2issue: Low: Firewood
Medium: Food
High: Water
value2reason: Low: I don't plan on sitting around the fire very much at all.
Medium: I plan to do a lot of hiking and need to keep my energy level up.
High: I need extra water because I tend to get dedydrated very easily.

Negotiation dialogue:
mturk_agent_1: Hi! Hope you are having fun camping.

mturk_agent_2: Yes, I do enjoy camping, especially if I have plenty of water.

mturk_agent_1: Did you forget to carry water? Or did you bring too much?

mturk_agent_2: I tend to get dehydrated very easily, so I need at least two of the additional packages of water.

mturk_agent_1: I see. It so happens that the food we carried was accidentally left in the car and the food items have gone bad. If we can keep the food, you can have 2 waters.

mturk_agent_2: I would like to do quite a bit of hiking.  I would like 2 water, 2 food, and 0 firewood.

mturk_agent_1: well, that will not work for us. We have kids and we do really need the food. I hope you understand. We can try and make it with 1 water but we would need the food ☹️

mturk_agent_2: it looks like we have a problem.  2 water, and 1 food only gives me 3 items.  I really don't need any extra firewood.☹️

mturk_agent_1: Well, you can still have a firewood. We can take 2 food, 1 water and 1-2 firewood. You can keep 2 waters, 1 food, and 1-2 firewoods. 

mturk_agent_2: I guess that I can change my plans somewhat, and spend more time around the fire.  Maybe I can roast some marshmallows.  I could take 2 water, 1 food, and 2 firewood.

mturk_agent_1: Hmmm. We may be able to make that work 

mturk_agent_2: Submit-Deal

mturk_agent_1: Accept-Deal