If you leave a message, here is a collection of techniques that have gotten calls returned: First name and number only (in a very businesslike manner). It seems that calls are returned in inverse proportion to the amount of information left. Be funny Clean wit will get response. Be indirect “I was going to mail you important information, and I wanted to confirm your address.” Offer fun “I had two extra tickets to the Knights game and I thought you might be interested. (here’s the sure shot) Please call me if you can’t go so I’m able to give the tickets to someone else.” If it was positive first meeting, remind the prospect where you met. Dangle the carrot. Leave just enough information to entice. Ask a provocative or thought provoking question.
This is a direct and persuasive way of asking for a follow-up meeting. Your prospect is more likely to agree to discuss their pain points further than if you were to say, "I'd love to talk more about how I can help. Let me know when we can get a call scheduled." The latter is vague and feels like more of a burden than the first request.

“Hello ____. This is _____ again, calling from ______. I ran across some information on a client who made dozens of offers on houses before someone finally accepted one of them. We learned a lot from the experienced and I successfully used the findings to help other homebuyers make bids that were accepted early in the house hunting process. I thought I would share it with you in hopes of saving you time and making it easier for you to purchase the home of your dreams. I’ll email you the information. Give me a call if you would like to review it together. Thank you.”
If you are using a IP 400 series desk phone, press the Voicemail function key. If you are using a Cisco 7900 series desk phone, press the "Messages" button (envelope icon). If you are calling from a phone other than your own desk phone, dial your own phone number and press the * key when you hear the voicemail greeting.