Given a command from the user, a voice assistant like Siri or Olly will first determine that the command is under which of the following predefined scenarios, and for each scenario, the user has which of the predefined intents.
An example of the scenario is Question Answering, and the possible intents of the user are about: currency, definition, stock, factoid, maths. Rest of the scenarios and intents are:
Email: query, query contact, send email, add contact
Takeaway: order, query
Lists: remove, create or add, query
Weather: query
Calendar: query, set, remove
Recommendation: events, locations, movies
Alarm: set, query, remove
General: quirky, joke, greet
Play: podcasts, music, audiobook, radio, game
Music: likeness, query, settings, dislikeness
IoT: cleaning, coffee, light change, light up, light dim, light on, light off, wemo on, wemo off
Social: post, query
Transport: traffic, taxi, query, ticket
Date/time: query, convert
News: query
Cooking: recipe, query
Audio: volume up, volume down, volume mute, volume other

For the following examples:
1. book a taxi to the airport for tomorrow morning
2. if it's eight pm on the east coast what time is it in sacramento california
3. open derek's contact information
4. bring up a recipe for turkey meatballs
5. start my robot vacuum cleaner
6. define the moon for me
7. i want to reply to jean's email
8. what exhibits or shows are scheduled at the metropolitan theater
9. nighttime mode
10. turn on repeat
11. olly i got into a wreck today
12. where is denmark
13. time to hear me some blake shelton
14. what time is it in dooa
15. please send me info on how to go about purchasing a train ticket to new york
16. search for two tickets on tuesday's train to paris
17. turn lights blue
18. when is taco bell going to arrive
19. add pastries to the christmas list
20. will i need sunblock this weekend
21. set a reminder i need to wake up at five am every morning
22. i had a horrible service at olive garden i need to tweet them
23. please turn the volume to the loudest setting
24. i want to find emails from bob with the subject that contains the word meeting
25. call pf chang's to order me egg foo young
26. please delete list titled kickball
27. turn on the tv socket when i arrive home
28. what new movies available today
29. are there any accidents on the four hundred and five
30. play the most current episode of levin

The corresponding scenario and intent are:
1. Transport: taxi
2. Date/time: convert
3. Email: query contact
4. Cooking: recipe
5. IoT: cleaning
6. Question Answering: definition
7. Email: send email
8. Recommendation: events
9. IoT: light dim
10. Music: settings
11. General: quirky
12. Question Answering: factoid
13. Play: music
14. Date/time: query
15. Transport: query
16. Transport: ticket
17. IoT: light change
18. Takeaway: query
19. Lists: create or add
20. Weather: query
21. Alarm: set
22. Social: post
23. Audio: volume up
24. Email: query
25. Takeaway: order
26. Lists: remove
27. IoT: wemo on
28. Recommendation: movies
29. Transport: traffic
30. Play: podcasts

Then for the following commands:
%s

The corresponding scenario and intent are: