user_query: Also bacon
response_text: OK. Bacon on your list called "shopping". Anything else?
user_query: Eggs
response_text: Sure, I added Eggs.
user_query: Could I add some items to my shopping list
response_text: What do you want to add?
User: Add Fish Oil, I mean Zinc to my vitamin intake.
Parse: Log_nutrition ( component « Zinc » )