The more personal and specific the question, the more likely it'll get a response. Think about it this way. If you start to have chest pains on a busy city street, and you cry out, "Somebody call 911!" you might get help … but you might not. However, if you were to point at one specific person and shout, "Would you please call 911 for me?" it's almost a certainty that the stranger you selected would grab their phone and dial.
The first two are voicemails for prospects you haven’t spoken with yet, the next one is for when you’re calling a prospect or client back, and the last example is for when your prospect or client isn’t calling you back at all:

“Holiday voicemail greeting is the perfect opportunity to personalize the usually neutral corporate communication.” 9 scripts for holiday voicemail greetings. Below we have listed several ideas for great voicemail messages, depending on your company’s needs. 1. Happy [X holiday]! You’ve reached [ company’s name].
9. Update Your Greeting Frequently. Many of the things that can make your voicemail great, also require that you update it pretty regularly. Information like deals you’re running, when you’re away, and who to contact while you’re out can take your greeting to the next level, but they’re obviously time sensitive.