how to parsing the DailyDialog

[JBoRu]

Excuse me,
I want to parse another file, which including some sentences, the example as follows：

Can you do push-ups ?
Of course I can . It's a piece of cake ! Believe it or not , I can do 30 push-ups a minute .
Really ? I think that's impossible !
You mean 30 push-ups ?
It's easy . If you do exercise everyday , you can make it , too .
I'm so appreciate that you can give me a advice! Thanks!