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State your name clearly so the caller knows they have the right number. 3 of the messages I heard last month were missing his/her name.

Hello, you have reached the dental office of Dr. X. We are busy assisting a patient now, but will call you back as soon as possible. Please leave your name, reason for calling, and your number. If this is an urgent enquiry, please call 911. In this case, the dentist is giving a reason for not being available and they’re providing a way to prioritize the patients who need the most help. They’re also leaving an emergency number for the most severe of situations.
Note in the above screenshot, our system ran perfectly fine for nearly three weeks. On September 12, however, we must have lost internet connectivity in my house as shown by the 9 minutes of downtime. The Pi and our scripts were running fine, but the webserver didn’t have web connection in the wee hours of the morning. Regardless, that problem thankfully sorted itself out!