user_query: Add chocolate to my shopping list 
response_text: OK, I added chocolate.
user_query: Check off lemonade on my shopping list 
response_text: OK, I checked off lemonade.
user_query: Can you put lemonade on my shopping list 
response_text: Alright, I added lemonade.
User: Pause the exercise 30 minutes sorry 50minutes
Parse: Pause_exercise ( duration « 50minutes » )