Hi,
Good question. I agree with several others that you should not use an investment banker to raise seed money.

Have you done any market/customer validation of your software. This is really important before you start raising money from outside investors. Investors will ask.

I am working with other start-ups (including my own) on how to raise money without bringing in outside investors. The best case scenario is talk potential customers to do a proof-of-concept, feasibility project.

I am happy to talk through the various options with you if you set-up a call.