User: I need a movie for tonight
Assistant: what movie
User: i need star wars
Assistant: ok star wars, for what time?
User: 8:00 PM
Assistant: what screening?
User: normal
Assistant: what location?
User: reno
Assistant: how many tickets?
User: 3
Assistant: Ok, 3 tickets for star wars for 8pm at a normal screening correct?
User: NO, I change my mind, make it 3D
Assistant: 3D Star Wars for 3 tickets for 8pm then?
User: Yes
Assistant: ticket have been purchased