Standard greeting with your name: "At the tone, please record your message to [name]."
“Good afternoon. You have reached the office of [your name]. I will be out of the office beginning on [date] and will be returning on [date]. Please leave a brief message with your contact information, and I’ll be sure to get back to you as soon as I return on [date]. If this is an emergency or you need to speak with someone before I return, please contact [name of colleague/supervisor], [their job title], at [their phone number].”

That's where Slydial comes in. It's a service that lets a caller go directly into a mobile number's voicemail. Even better, the basic service is free, and no signup is required to use it unless you need more functionality.
For phone greetings to be successful, they need to be: Crisp. A crisp, clear voice goes a long way. The message needs to be clearer than glass. No shuffling papers or dogs barking in the background. **Professional. **Your phone greeting needs to sound like you're a real company, not a random person answering their cell phone. Thought-out.