chat_history: ['We ordered 3 diet cokes with dinner the other night, and they all came out a different shade of coloring!', 'Wow that is weird.  I love Diet Coke.  What was wrong with it?', 'I was concerned they were the wrong drink order, we lined them up and talked to the server and together figured out the syrup bag must be going empty!']
sys_response: Nothing worse than a bad soda! lol.  I like the new Freestyle machines, it's always just right.
situation: At dinner the other night, my family ordered three diet cokes.  They all came out a different shade from dark to light.  I was pretty concerned with the quality of the drinks when they were delivered.