mr. manners returns

So I’m on the elevator at work. Halfway up the door opens. I hear a conversation. The conversation continues. As the door starts to close, one of those engaged in the chit-chat reaches out her hand to keep the door ajar. She continues yapping. I sigh loudly. The door begins to shut again. She begrudgingly lets it close, flashing me a dirty look before it shuts. As if I’m the rude one