User: Dear Assistant, I would like to purchase a ticket for a movie.
Assistant: Which movie would you like to purchase a ticket for?
User: I would like to buy a ticket for Trolls World Tour, standard viewing, in the at the Cinemark in University City.
Assistant: Ok, how many tickets would you like to buy?
User: I would like to buy 2 tickets to the movie for April 22nd 2020.
Assistant: I have found three showings of that movie: 3pm, 6pm and 9 pm. Which showing would you prefer?
User: I would prefer to see the movie at 9pm.
Assistant: Ok, so I am confirming 2 tickets for Trolls World Tour at 9pm in the Cinemark in University City.
User: Wait, one second, I have changed my mind. I think I actually want to see Vin Diesel's Bloodshot in 3D instead.
Assistant: What date should I book the tickets for?
User: Please book the tickets for April 22nd 2020.
Assistant: Would you still like two tickets for that date?
User: Yes I would.
Assistant: What time would you like to see the movie? There are three showing, 3pm, 9pm and 12am.