In Microsoft Dynamics CRM 2011, we introduced the concept of UI Scripts (otherwise known as Dialogs) which are essentially workflows with the provision to accept inputs from the user. We call these as “Prompts and Responses”. I use the word provision lightly simply because it’s not really optional; rather it is mandatory to have at least one page with at least on Prompt and Response item in any given Dialog. If one didn’t then one would see the following error message on activation of the Dialog.
Read more from the Microsoft Dynamics CRM Blog.