用方框中所给的选项补全对话

A: Hi, Tony. Why are you in such a hurry?

B: I lost my bag. I remember I put it on the playground,

A: Really? When did you notice it was gone?

B:

A: Bad luck! Is there anything important in your bag?

B: Yes,

A: Don't worry. I can help you look for it,

B: Thank you so much! But what shall we do next?

A:

B: Good idea. Do you know where it is?

A: Maybe we are lucky to find it there.

B: I hope so. Let's go there and have a look now.

A. Whose bag is this? B. Let's go to the lost and found office. C. My wallet is in the bag. D. It's on the first floor in the office building. E. Half an hour ago. F. What's the matter? G. What can I do for you?