Let's consider this from a broader viewpoint.
Many departmental areas of the modern office have zero-article.
We speak of:
-Human Resources,
-IT
-Hospitality
-Maintenance
-Security
-Parking
We say..."Call security, ask at reception, get IT to fix it..." Not the HR, the Security etc.
None of those use "the"...it is just another department. If you add "office" to the equation, then the definite article does function.
That said, "the reception" sounds like a reaction to a public statement, or what your radio is getting on the airwaves, or the event that occurs after a wedding. It's usage.