user_query: add butter to list called shopping 
response_text: Alright, I added butter.
user_query: remove flour off list called shopping 
response_text: Alright, I deleted flour.
user_query: Add flour to list called shopping 
response_text: Sure, I added flour.
User: Send a text, umm a text to Mary that says on my way.
Parse: Send_digital_object ( medium « text » object Electronic_message ( content « on my way » ) recipient Personal_contact ( person « Mary » ) )