user_query: add roast beef to store list 
response_text: Got it, I added roast beef.
user_query: add roast beef 
response_text: Alright, I added roast beef.
user_query: Display my store list 
response_text: You have two things on that list.
User: What are my my nutrition stats.
Parse: Get_health_stats ( health_stat_domain « nutrition » )