Man: Excuse me. I lost my umbrella.
Worker: What colour is it?
Man: It is green, with small ducks.
Worker: Where do you sit?
Man: In room 3, seat 12.
Worker: Let me look. Hmm... I have a red umbrella and a black one.
Man: No, mine is green.
Worker: Wait! Here is a green umbrella with ducks.
Man: Yes! That is mine. Thank you!
Worker: You are lucky. Please do not lose it again!
Fiction note: All people, places and events in this dialogue are fictional.