user_query: add an item
response_text: OK. Which list do you want to add to?
user_query: pcking
response_text: Alright. Which list do you want to add to?
User: Show me the list I created this afternoon called what to bring to the wedding.
Parse: Get_list ( list_creation_time « this afternoon » list_singular_or_plural « list » list_title « what to bring to the wedding » modality « Show » )