You need to be very people friendly/good telephone manner
Oh how I wish our School receptionist was like this!
I rang her recently as I had a missed call from the School and knew DD had toothache that morning.
I rang reception and said I had a missed call, is everything o.k?
She said as far as I know , and it could have been anyone that rang me.
You would think she might try and find out?
She never ever says hello when parents approach the desk, or ask if she can help.
She just gives a hard stare 
She shouted "No" at me when I asked to see what contact details they have for N.O.K.
I heard her say "Im keeping his mobile for a while to teach him a lessson for losing it" when I handed it in, I found it outside the school on the pavement. She knew whose it was.
Funnily enough when teachers approach the desk, she is smiley and polite.
Do you think they tell her to not fully engage with parents?!