user_query: Item to add on Christmas list
response_text: What do you want to add?
user_query: Egg nog
response_text: OK, I added Egg nog.
user_query: Sorry, add cranberry sauce instead
response_text: I couldn't find that item on your list called "christmas."
User: I ate 457 calories for lunch today.
Parse: Log_nutrition ( culinary_quantity « 457 calories » meal « lunch » time « today » )