user_query: tayor
response_text: Sorry, which Charlotte would you like to call?
user_query: Charlotte
response_text: Is that Charlotte WILLIAMS or Charlotte TAYLOR?
user_query: Id like to call someone
response_text: Who do you wanna call?
User: How much was my cell phone bill last month.
Parse: Get_bill ( account_type « cell phone » billing_date_span « last month » )