Dialog Maker 3.0

Dialog Maker is a utility for AppleScript user interaction commands like display dialog, choose from list, and choose file.

It knows all existing parameters for each of these and allows you to create sophisticated prompts with the bare minimum of typing.
Dialog Maker takes your command’s options and turns them into a piece of script, you can then copy it, insert it to the frontmost AppleScript Editor window, and even preview it before use.