Steve Jobs had a great approach to meetings: he established a DRI - a directly responsible individual - For each line-item on the meeting’s agenda. This person was tied to the delivery and/or follow-up necessary to bring each task to completion.
As a salesperson, you are always the DRI. Don’t leave your meeting without knowing what’s next.
While you can’t control every aspect of client relationships, controlling what you can is important. Organizing a productive meeting is one of those controllable factors.