Spanish phrase
Me avisan si ~.
Meaning
Please let me know if ___.
When to use it
It is a polite way to ask to be notified if an issue arises. Commonly used with service staff about cancellations or schedule changes, mildly formal.
Example dialogue
Me avisan si cancelan el vuelo.
Please let me know if they cancel the flight.
Sí, se lo comunicaremos en cuanto lo sepamos.
Yes, we will inform you as soon as we know.