[HE KEEPS BRANDY DOWN THERE TOO, it'll be fine. ...Speaking of their interactions, Sebastian has most likely apologised for the trouble he caused her when he'd come down with something. Apologised, not thanked her, but... same difference.
Very good, then. In that case, may I trouble you to open the door for me?
[Considering his heavy box and everything. Otherwise he'll do it himself, but why not use people when they're right there? She can talk if she wants to, he decides.]