[This wouldn't be the first time Albus had been invited to brunch by the Minister of Magic. It was, however, the first time he'd been completely in the dark about the person. Being time displaced had its disadvantages.]
Thank you for your kind invitation. As of this moment, my schedule is open. Should that change in the near future, I shall let you know.
Private
Thank you for your kind invitation. As of this moment, my schedule is open. Should that change in the near future, I shall let you know.