User: I want to go to the movies tonight
Assistant: do you know what you would like to see
User: I want to see science fiction
Assistant: do you like Star Wars
User: that could be good
Assistant: It is a big budget sci-fi movie
User: I have heard of it
Assistant: would you like to see Star Wars
User: yes please
Assistant: how many tickets
User: 2 tickets
Assistant: ok 1 ticket then
User: now I said 2 tickets
Assistant: ok, sorry 2 tickets