补全对话。
A: Good morning, madam!
B: Good morning, sir!
A: You look worried. (1)______?
B: My son got lost when I was talking with my friend in the park. I've looked for him everywhere,
but I can't find him. What shall I do?
A: (2)______. Tell us something about him, and we can help you.
B: Thank you, sir.
A: Now please tell me (3)______.
B: He's six years old.
A: (4)______?
B: He's thin and tall with big eyes.
A: What is he wearing today?
B: He's wearing a white T-shirt and blue jeans.
A: (5)______?
B: It's 13803677057.
A: OK. We'll call you as soon as we find him.
B: Thank you very much.