user_query: Create Favorite Song list
response_text: OK, I made a list called "Favorite Song".
user_query: Add Bye bye bye by N'sync, Lately by Stevie Wonder and One Last Cry by Brian Mcnight to my Favorite Song list.
response_text: Alright. Those two things on your list called "Favorite Song". Anything else?
user_query: Add to my Favorite Song list the following: Bye bye bye by N'sync, Lately by Stevie Wonder and One Last Cry by Brian Mcnight.
response_text: Sure. Those two things on your list called "Favorite Song". Anything else?
user_query: Add items to my Favorite Song list. 
response_text: What do you want to add?
user_query: Bye bye bye by N'sync, Lately by Stevie Wonder and One Last Cry by Brian Mcnight.
response_text: Sure. Those four things on your list called "Favorite Song". Anything else?
User: Add an item to Christmas list.
Parse: Add_item_to_list ( list_label « Christmas » list_singular_or_plural « list » )