Participant mturk_agent_1's preferences:
value2issue: Low: Food
Medium: Water
High: Firewood
value2reason: Low: More food would be necessary to not starve during the trip and feed my dog accompanying me on the camping trip.
Medium: More water is necessary to stay hydrated, stay clean, and useful for cooking
High: More firewood is necessary to be able to cook my outdoor meals, stay warm, and sit around during a bonfire for that camping experience

Participant mturk_agent_2's preferences:
value2issue: Low: Water
Medium: Firewood
High: Food
value2reason: Low: Water is something everyone needs, as my medication tends to make me thirsty, I may need extra.
Medium: Because I am older and have some physical problems, it would be much harder for me to collect more wood myself. 
High: I have low blood sugar and if I go too long without eating something I get very dizzy and can even have fainting spells. 

Negotiation dialogue:
mturk_agent_1: Hello, I would like to have 3 packages of firewood.

mturk_agent_2: I would be willing to give you 2 packages of firewood, if you give me three packages of food and two packages of water

mturk_agent_1: I can give you three packages of food, however I would want three packages of firewood and 2 packages of water

mturk_agent_2: How about I give you three packages of firewood and one package of water instead

mturk_agent_1: What would you need two packages of water for?

mturk_agent_2: I am on medication that tends to make me very thirsty and extra water would help

mturk_agent_1: That seems important for camping, I can take that into consideration

mturk_agent_2: why would you need two packages of water?

mturk_agent_1: I would need two packages of water because I am going on an extended camping trip, and the extra water would help keep me hydrated for the entirety of the trip

mturk_agent_2: It looks like we both have valid reasons for wanting the extra water 🙂. But we need to come to an agreement. How about I give you the two packets of water in exchange for one packet of firewood?

mturk_agent_1: How about you give me 3 packets of firewood, and one packet of water as I think you deserve to have the extra water!

mturk_agent_2: and I still get three packages of food?

mturk_agent_1: Yes

mturk_agent_2: Okay, you have a deal. Thank you so much!

mturk_agent_1: Submit-Deal

mturk_agent_2: Accept-Deal