I created this concept based on Conversational UI normally when user opening a bank account they have to fill many fields so user will get pain to fill many detail some time.
In this concept machine(application) will ask questions and user will have to fill answers user will feel like he is talking to some one and app will show the status how many filled and how many remaining from the left navigation represent with the colors.
So depends on user documents upload application will pre populate some values where it will reduce the pain and time.
Once user enters all data he can review the summary and if he need to do any update he can or he can directly submit the application