If you don't see what you want, please ask (for it).
and If you don't see what you want, just ask (for it).
a polite phrase intended to help people get what they want. (See also If there's anything you need, don't hesitate to ask.) Clerk: May I help you? Sue: I'm just looking. Clerk: If you don't see what you want, please ask.Clerk: I hope you enjoy your stay at our resort. If you don't see what you want, just ask for it. Sally: Great! Thanks.