user_query: call the first option
response_text: Sorry, who do you wanna call?
user_query: actually the first one
response_text: Here are some results from a search
user_query: the second one
response_text: Calling Liam JACKSON.
user_query: call jackson
response_text: Sorry, which jackson would you like to call?
user_query: call jackson
response_text: Is that Jackson HARRISON or Liam JACKSON?
User: Start walking.
Parse: Start_exercise ( activity « walking » )