Tell me about any marketing you are currently doing, off-line and online. From flyers to cold calls, to AdWords, Facebook Ads, anything you use to grow your business.
Give me some details on the most successful marketing campaign you have run to date. Perhaps it was a giveaway, a competition, flyers, etc.
This is like telling the house builder what your budget is for the home you want to build. If the builder doesn't know your budget, there is no way that he can tell whether your goals are achievable.