Sometimes the prospect is not ready at the end of the Initial Meeting to engage you for a Spec Review or ad-hoc work. Even if this is the case, it's really important you leave the meeting with a crystal clear future about the next stage and when that will be. Every prospect needs an intelligently scheduled follow-up activity.
So, at the end, ask the prospect:
Figure: Bad example: It's unlikely that a follow-up meeting will occur
Figure: Good example: Leading the prospect to help find what time works for them, highlighting that you are busy and that they are not locked into the meeting
This will ensure that the follow-up meeting or phone call gets a much better chance of happening... Basically, the prospect sets this up and will feel a certain indirect obligation.
The other way to schedule a follow-up is using Followupthen.