User: Hey, I want to see showtimes for 1917 .
Assistant: Okay, in what city?
User: Brooklyn, New York
Assistant: Okay, and how many people?
User: Two
Assistant: Okay, and around what time?
User: Around 8:00PM.
Assistant: Okay, what kind of screen do you prefer?
User: IMAX 3D
Assistant: Alright, and if that isn't available, do you have a second preference?
User: Yes, regular IMAX
Assistant: Hmm, I can't find any IMAX 3D showings of 1917. Do you want to change your screening preferences?
User: Sure, my first preference is IMAX.
Assistant: Okay, and your second preference?