User: Can you help me buy tickets for a movie tonight?
Assistant: Yes, what city should I search for a theater in?
User: Houston.
Assistant: There is 1 theater, Northstar.
User: Okay, that works. What movies are showing?
Assistant: 1917, Dolittle, Star Wars, and Jumanji.
User: 1917 sounds great. What are the showtimes?
Assistant: 6pm, 7pm and 8pm.
User: Lets go with 6pm.
Assistant: How many tickets?
User: 4
Assistant: I am sorry, there are not four tickets available at that time.