Write your predictions about a future city in Vietnam in an eamil of 160-180 words to a friend

Write your predictions about a future city in Vietnam in an eamil of 160-180 words to a friend. 
Outline: 
To:
Subject:
Dear___,
I received your email last week, but I couldn't answer your question right away. You asked me what Ha Noi would look like forty years from now. What a difficult question! To tell you the truth, I have had to think very hard and have finally come up with two predictions.
If I take an optimistic viewpoint, ___________________________________.
But if I take the pessimistic viewpoint, _______________________________.
I hope you are satisfied with my answer. And here is my question: What will ______’s capital city look like in the future? I'm looking forward to your reply.
With best wishes,
_____
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