user_query: Add Sting to my list.
response_text: Alright. Which list do you want to add to?
user_query: Music
response_text: Got it. Which list do you want to add to?
user_query: Music list
response_text: What do you want to add?
user_query: Sting
response_text: What do you want to add?
User: What is my water consumption for this week?
Parse: Get_health_stats ( health_stat_type « water consumption » time_span « this week » )