Often times knowing the purpose of their calls allows me to respond to their messages by sending them emails. As an example, when people have a question, often times I can send them an email answering their question. Knowing the purpose of the call also allows me to continue the communication through their voicemail if we end up playing phone tag.
2. Hello, you have reached the office of [your name]; I will be out of my office starting on [date] and will be returning on [date]. You can call me when I return or leave a brief message. If this is an emergency I can be reached on my cell, which is [your number].

VirtualPBX provides every extension owner in your company with custom routing. If the employee isn’t available, the call will go to the personalized business voicemail account for that employee as a result. In this way, each employee can have a business greeting for callers. Similarly, you can set up voicemail boxes for departments or your company as a whole. Even if the call goes to a phone that already has personal voicemail, we can make sure your business calls only go to your business voicemail system. People that call the employee’s number directly get personal greetings, those that go through VirtualPBX get a business greeting.
Hello. You have reached the office of Gemma Klein. I am now away from my desk from 1st January until the 7th January. Please leave me your name and phone number and I will respond as soon as I am back. If this is an urgent situation or you require assistance before my return date, please contact my assistant Sarah Jones on 01234567890. Thank you.