Thought this write up by law firm of Foley & Lardner to be quite helpful in understanding how the interview works and how to make the best use of it. There are a couple of potentially important aspects which are noted below Opty

<In many cases an interview allows the applicants to complete the examination review process more quickly. This is especially true if the examiner is willing to provide feedback on arguments and amendments proposed during the interview. In this case, you may present alternative arguments or proposed amendments if the examiner notes that the initially proposed arguments or amendments would not place the application in condition for allowance.>

<One the biggest benefits of an interview is to obtain the examiner’s input and feedback. You should allow the examiner make helpful suggestions and ask the examiner to comment on your arguments and amendments. Do not just present the arguments and amendments and then terminate the interview.>