[Sounds of steps.]
John: Who’s that?
John: You have said that you would be with your family tonight, right?
Sherlock: You have said that you would be with Sarah, right?
John: So, why you’re here now.
Sherlock: The same question to you.
John: I bought some milk and I’m coming to put them in the fridge, or you may starve to death in two or three days.
Sherlock: Unfortunately, I bought some beans and I want to use the fridge now, too.
John: …Well, never mind.