User: I need to change my movie tickets.
Assistant: What would you like to change them to?
User: I would like to change them from regular screen to Imax screen.
Assistant: Would you like to keep the same location?
User: Yes please
Assistant: Would you like to keep the same time?
User: Yes please
Assistant: Do you still need only 2 tickets?
User: Yes, still 2.
Assistant: We found a new screen but it's at a different location and different time.