user_query: Get this item on my shopping list
response_text: Which item?
user_query: Jane Eyre
response_text: I couldn't find Jane Eyre on your list called "Shopping."
user_query: Add jane Eyre to the shopping list
response_text: Alright, I added jane Eyre.
user_query: Sorry, can you change that to add bacon instead?
response_text: OK, I changed the list item to bacon on your list called "shopping."
User: Record that I had vitamin C, actually it was vitamin D.
Parse: Log_nutrition ( component « vitamin D » )