User: I'd like to get some tickets
Assistant: What would you like to see?
User: Underwater
Assistant: What time would you like to watch the movie?
User: 8:00 PM
Assistant: What is your location?
User: San Francisco, California
Assistant: What format would you like to watch the movie in?
User: Just standard would be fine
Assistant: Unfortunately, that format isn't available at the time you chose
User: Alright, how about 3D?
Assistant: There is a showtime in 3D
User: Then I'll buy tickets
Assistant: So you want 2 tickets at 8:00 PM for Underwater in 3D?
User: That's right
Assistant: Your total is $20, would you like to buy tickets now?
User: Yes
Assistant: Your tickets have been purchased and sent to your mobile device