user_query: add pasta
response_text: Alright. Which list do you want to add to?
user_query: shopping
response_text: Alright, I added pasta.
user_query: wait, move it to the grocery list
response_text: What do you want to add?
User: Find valet parking near Walmart for 1:45 PM
Parse: Find_parking ( location « Walmart » parking_type « valet » time « 1:45 PM » )