user_query: add to my grocery list, apple, oranges and milk
response_text: Alright, I added those two things.
user_query: add bread and meat
response_text: Alright, what do you want to call it?
user_query: picnic grocery list
response_text: Sure, I made a list called "Picnic Grocery List" and added those two things.
User: What's my weight for yesterday, actually, today?
Parse: Get_health_stats ( health_stat_type « weight » time_span « today » )