Whether you’re out for the day or are off for the week, the first rule of an out of office voicemail greeting is: let callers know when you’ll be back! You’ll save them the frustration of continuing to call and yourself the hassle of listening to redundant voicemails. It’s also a good idea to set the expectation of whether you are answering messages while you’re away, and who they can reach for assistance in your absence.
It’s a good practice for each of your team members to have their own personal business phone numbers. There are many reasons why they shouldn’t use their personal cell phone number for business, so you’ll want to give them their own phone number through your VoIP provider or phone system.

In this case, the agent shows concern for the customer and wants to serve him in the best possible manner. The agent is also polite and courteous.
If you leave me a message that includes your name, telephone number and reason for calling, I will return your call when I get back. You have reached Jim Smith. I will be out of the office until Feb. 14. If you would like to leave a message after the tone, I will call you back when I return.