A: I need your help with something.

B: What's wrong?

A: I somehow locked myself out of my apartment.

B: How did you lock yourself out?

A: I'm really not sure.

B: Where's your key?

A: I locked it inside the house.

B: I do have a spare key to your door.

A: May I use it, please?

B: Okay, but once you get in, bring my key right back.

A: I will, and thank you so much.

B: Make sure to keep your key with you next time.