user_query: 9.pm
response_text: OK, I'll remind you on Wednesday at 9:00 AM.
user_query: Tomorrow.
response_text: Alright, buy a new coat. This will be for Wednesday. At what time?
user_query: To buy a new coat.
response_text: OK, buy a new coat. When do you want to be reminded?
user_query: Create a reminder.
response_text: What's the reminder?
User: Can you call the dentist and cancel my appointment?
Parse: Initiate_call ( callee Personal_contact ( person « the dentist » ) )