user_query: add oil change to list called to-do 
response_text: Got it, I added oil.
user_query: Remove go to store on list called to-do 
user_query: check off go to store on list called to-do 
response_text: OK, I checked off go to store.
user_query: add go to store on list called to-do  
response_text: Sure, I added go to store.
User: Show me the shopping list I created on Sunday.
Parse: Get_list ( list_creation_time « Sunday » list_label « shopping » list_singular_or_plural « list » modality « Show » )