User: i need a movie for 7pm
Assistant: what location?
User: seattle
Assistant: what type of movie do you want?
User: something for kids
Assistant: how about dolittle?
User: ok
Assistant: how many people
User: 3
Assistant: what type of screen
User: imax
Assistant: ok, I have tickets for 3 at an imax screening for 7pm
User: wait, can i get is at a normal screening instead
Assistant: yes, do you want the tickets purchased at the new time?