User: I want to get movie tickets for Friday please.
Assistant: Ok, what theater.
User: UA Denver please.
Assistant: What movie for?
User: Downhill please.
Assistant: How many tickets?
User: I need three tickets.
Assistant: What time preference.
User: After 7pm please.
Assistant: Ok, I have a showing at 7:15pm.
User: That works.
Assistant: Ok, I have three tickets for Downhill at 7:15pm at UA Denver for Friday the 28th.
User: Actually one of the guests just texted me and canceled.
Assistant: Ok, so you need two tickets now?