The Concept
Most sales meetings end vaguely because they started vaguely.
An Upfront Contract (Sandler Rule) sets the rules of engagement in the first 2 minutes.
The Script
"We have 30 minutes. My goal is to show you X. You probably have questions about Y. By the end, we should decide if it makes sense to schedule a scoping call or if this isn't a fit. Does that sound fair?"