Doing this helps you understand what the prospects are looking for and what they are expecting from you which will in turn help you to cater to them better.
An attractive voicemail can be a major factor in appearing professional and legitimate to the outside world. When recording a professional voicemail for your business, your validity is evaluated subconsciously by those who call you. Don’t make the mistake of overlooking this simple yet valuable component of your brand!

Thank you for calling ABC Company. We are currently closed for the holiday. Our normal business hours are 8 am to 8 pm, eastern time, Monday through Friday. Your call is very important to us. Please leave your name, phone number, and a brief message regarding your call. We will return your call on our next business day. Thank you.
Consider for a moment how your phone is currently being answered. Professional courtesy is quite often not the standard for many college students. An abrupt "Yeah!" could be listed among the more courteous greetings. The more outrageous remarks will often buy you a major black mark in the professionalism category—even if it was your roommate answering your phone and acting crazy. A simple "This is ____" is always a pleasant change for a college student call. Make the change today, before the next (or first) employer phone call. If you have a landline, you should also encourage your roommate to do the same.