补全对话：
A：What are you going to be in the future?
B:______________________________________.
A:That sounds interesting.Maybe you will fly to the moon.
B:I hope so.____________________________.
A:______________________________________.
B:Because my parents think being an astronaut is dangerous .
And if I am an astronaut,I'll be away from them for a long
time.
A：That's true.__________________________.
B:They want me to be a doctor.
A：______________________________________.
B:No,I don't like it.I want to be a policeman.