German phrase
Sind Sie flexibel bezüglich ~?
Meaning
Are you flexible about ___?
When to use it
It asks about flexibility. This polite question checks whether plans can be adjusted.
Example dialogue
Sind Sie flexibel bezüglich des Termins?
Are you flexible about the appointment?
Ja, der Termin ist für mich flexibel.
Yes, I can be flexible about the appointment.