The simple truth is that you need to be more aware of what you’re leaving for other people to hear. Sure, this doesn’t always register as a priority for users, but it’s never too late to reassess your greeting. a. Reading/Speaking in the Imperfect Tone: Tone is absolutely everything. Users don’t want to come off as being too nice, as it sounds insincere, or being too terse, as it can be interpreted as being rude. That being said, striking the right balance is absolutely essential. Your greeting exists as its own entity, and therefore, it should NOT rely on callers’ familiarity with you. Instead, it needs to appeal to the masses. As such, your inflection, i.e. the way you state your name and directions, needs to be both welcoming and firm. b. Injecting Humor & Insincerity: While humor/light heartedness can be welcoming, it can also convey a sense of informality, insincerity, and ultimately unprofessionalism. Why, because you’re not there to lend your humor or to contextualize. Instead, you’re assuming the caller has a working knowledge of your personality to ground the message. Though this might not sound like it’s all that terrible—it can be detrimental. As stated above, one should NEVER rely on a caller’s familiarity with you. Instead, aim to appeal to the masses. Humor is ultimately subjective, meaning not everyone has the same tastes; therefore, someone is bound to be turned off by a quirky or off-color remark. While implementing a light-hearted or even tongue and cheek tone can work, it’s just a really bad idea.
Hello, you have reached Dr. X. Right now, I am with a patient, so I’m unable to respond to your call immediately. If you need help with a prescription, call number Y. If you need to book/modify an appointment, call number z. Please, leave your name, and phone number and reasons for calling.

Before we get into business voicemail greetings, here are some interesting facts about voicemail messages to think about. 75% of all business calls are not completed on the first attempt. 60% of all incoming calls are less important than the work they interrupt. 90% of all written messages contain incomplete information.
Voicemails help in conveying messages from the caller when the concerned person is not available for attending the call. It has become a vital tool in telecommunication as the person receives the information instantly after accessing his phone. Thus voicemails allow us to stay connected with people both at personal and professional level.