User: I would like to go to the movies.
Assistant: ok, great. when would you like to go?
User: This evening.
Assistant: and what movie theater would you like to go to?
User: The one in Boulder City.
Assistant: What movie would you like to see?
User: Doolittle.
Assistant: OK, Ill check those movie times, would you like to see Doolittle in 3D or Imax.
User: No, thank you, just regular movie.
Assistant: And how many tickets will you be needing?
User: Four
Assistant: Ok, there are two showings for Doolittle at the Boulder City Movie theater for this evening. One is at 5:00 and the other is at 7:00. Which one do you prefer?
User: I think the 5:00 showing.
Assistant: OK, so that is four tickets for Doolittle, today at 5:00 at the Boulder City movie theater, right?
User: actually we would like to change that and see it in 3D.
Assistant: The Boulder City movie theater does not offer that movie in 3D