At the lost property office.

You lost that is very special you. You are at the lost property office.
A. Good morning!
B. Good morning,Can I help you?
A .I lost my school bag at the swimming pol yesterday.
B .OK,Can you describe it?
A .It's a quite big.
B .What's it made of?
A .It's made of leather
B. What coulor is it?
A .It's brown.
B.What brand is it?
A .It's NIKE school bag.
B. Is this it?
A. Yes,that's it! Thank you.