Participant mturk_agent_1's preferences:
value2issue: Low: Firewood
Medium: Water
High: Food
value2reason: Low: though having extra is nice, we are at a camping ground I am sure we can use branches and or brush to make fire in case we need additional fires. 
Medium: Water is another commodity, I dont think it will be easily found in camping grounds, cleaned water is of importance. 
High: camping has a lot of uncertainties to go with it. it is essential to be well prepare for any unprecedented happening. The more packages I have the better I am protecting and preparing for the worst. not only for myself but for my family. 

Participant mturk_agent_2's preferences:
value2issue: Low: Water
Medium: Firewood
High: Food
value2reason: Low: Water is essential. We all need water to survive.
Medium: Need firewood to prevent the cold. Hate getting a cold and being sick.
High: I am a big eater. I usually have 4-5 meals on the daily.

Negotiation dialogue:
mturk_agent_2: Hi buddy. 🙂

mturk_agent_1: Hey! how are you? I was wondering if you are okay with, If i could get all 3 food packages, I am taking my family, I have lots of kids, those little rascals go through food like there is no tomorrow. what do you think? 🙂

mturk_agent_2: I am sure we can work something out. How's your day? 🙂

mturk_agent_1: Thank you so much for understanding, so far so good, yours? want to negotiate on water and firewood and touch base with food, once we figure out what we will find okay with water and firewood?

mturk_agent_2: Sure. Once the deal button is active, we can work out a deal. 

mturk_agent_1: How many firewood packages do you want? you can have 2 and ill take 1, will you be okay with that?

mturk_agent_2: Since you want all of my food, I'll take 3 firewood. Or we can do a 2,1,1 deal. Where you get 1 more item than me. I don't mind. 🙂

mturk_agent_1: Awesome, Ill take all foods, and youll take all firewood, and for water, do you want one or 2? The deal button will open after we converse for a total of 10 messages, but prior to that we have to agree on the amount of packages we agree each will get. 🙂

mturk_agent_2: Yup. I don't mind. 🙂

mturk_agent_1: will be okay If i get 2 waters then? sorry, I did not understand. just to be clear, im getting 3 foods and your getting 3 firewoods, right now we are just deciding on water.

mturk_agent_2: Submit-Deal

mturk_agent_1: Accept-Deal