User: I wanna see a movie
Assistant: which one?
User: I wanna check out Frozen 2
Assistant: How many people?
User: 2 people
Assistant: How many adults?
User: Both are adults
Assistant: Okay and what time?
User: 7:30 pm
Assistant: and standard or 3-D?
User: I want standard
Assistant: Okay, shall I book it?
User: Wait, I wanna make it 3-D instead
Assistant: Okay, so Frozen 2 at 7:30 in 3-D?