We spend so much time learning the ins and outs of our products, how to overcome objections and we might even get great at asking for the sale. So why is it when its time to call a client or prospect to follow up on a sale we don't have a plan if they don't pick up. Most times we wing it and end up saying something very generic and most likely does not include a call to action.
Having a gameplan weather or not your prospect answers puts you in a place to be able to be the most effective all the time. The voicemail you leave might be the deciding factor of whether or not the prospect calls you back, remembers your name and/or your value proposition.

Call Back to Present the Quote:Hello Ms. Johnson this is Jordan Draper with Dagley Insurance. I'm calling you to let you know that I worked up several options that you could pick from and I have something prepared that you will really like. Please call me when you get this so I can make sure to lock in the price. Once again this is Jordan Draper with Dagley insurance and my phone number is 555-555-1234.
Call Back to Present the Quote 2:Hello Ms. Johnson this is Jordan Draper with Dagley Insurance. As promised I am calling you back once I had a chance to complete the quote and run the reports. I really think you are going to like what I have. Give me a call back so that I can finalize the discounts with you. My number is 555-555-1234
Call back when Price isn't better:Hello Ms. Johnson this is Jordan Draper with Dagley Insurance as promised. I am calling you back now that I have had a chance to complete a couple options. I need to run over a couple of the coverages to make sure I have them right but I believe I have something that is better than you have now. Give me a call so I can finalize the discounts with you. My number is 555-555-1234.
Follow Up after presenting the quote:Hello Ms. Johnson this is Jordan Draper with Dagley Insurance. I know we went over a lot yesterday so I wanted to reach out to see if I could answer any questions or make any tweaks to the policy. I would love to have you as my client and want to make sure you get what you are looking for. As well I am going to send you an email that has a PDF that goes over common coverage terms and what they mean.  Give me a call so that I can answer any questions you have and lock in your price. 
Follow Up after Presenting the quote: (Time has passed and no answer)Hello Ms. Johnson this is Jordan Draper with Dagley Insurance. I am following up with you on the quotes we went over together the other day.  I find that most of my clients have some questions that are preventing them from making a decision like “can I lower the price by changing my deductible or is a certain coverage really needed?” and I want to make sure I answer any of those questions or make adjustments that will get you the right coverage for the right price. Once again this is Jordan Draper with Dagley insurance and my number is 555-555-1234. 

Closing Thoughts;Remember if you have done everything you are supposed to in the profiling phase by building rapport with the prospect getting the to answer back should not be a problem. You should have enough equity built up that you can ask them to hold for bit to make the coverage right. But for some folks we never hear from again and my guess is we are not leaving them with need to call you back or even wait to get your presentation before making a decision. 
Having a script for your voicemail with something for them to think about as well as a call to action will get you a lot better results. Certainly being dynamic is the most important but what you say is the second most important. Take some time to make your own scripts or just steal these.  Get after it.