user_query: Erase both items from the grocery list
response_text: Sorry, I couldn't find any lists with that name.
user_query: grocery list
response_text: Sorry, I looked for Grocery, but couldn't find it. Do you want to see all of your lists?
user_query: No, just erase some items
response_text: Alright.
User: Find street parking near 17th street at 8:00 PM.
Parse: Find_parking ( location « 17th street » parking_type « street » time « 8:00 PM » )