The bad news is that, if you are a millennial, you cannot afford to regard leaving voicemail messages as obsolete. There are four generations actively participating in the workplace. This is unprecedented. It means that, while Baby Boomers are learning to text, millennials also must become adept at using voicemail.
21. "Hello, you've reached [your name, the office of X company]. The team is currently out of the office, but we'll be back on [date] stuffed with good food and eager to speak with you. Leave your name, number, and — if you're so inclined — your favorite [holiday dish, Thanksgiving tradition, etc.]"

You know that your callers are making inferences about your business and brand. If you want your voicemail recording to leave a positive impression, smile when you record it! Research shows that smiling affects how we speak, and listeners are not only able to identify that people are smiling, but also what the intent is of the smile based on voice intonation alone.
Pro tip: Only use first names. People of authority call each other by their first name only. Using the contact’s full name or saying Mr./Ms. [last name] can make you seem less confident and important than the person you’re calling.