user_query: I want to place a new item item on my shopping list
response_text: What do you want to add?
user_query: batteries
response_text: OK, I added batteries.
user_query: Stop adding that actually
response_text: Which item?
User: Please add an extra set of curlups to the recording of my morning workout.
Parse: Log_exercise ( activity « curlups » time « morning » )