Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. If the conversation begins with a question, label it '1' otherwise '0'.
Input:  Person1:     Hello , Bobby , It seems that I can't arrive at your home by 12 o'clock . 
 Person2:  What happened ? We're all expecting you , Hans , Dick , Archie ... 
 Person1:      I'm so sorry , I've been held up by the damn traffic jam for half an hour . I'd have arrived but for that . 
 Person2:  I see . Where are you now , Li ? 
 Person1:      Thirty meters ahead is the Waterloo Bridge . 
 Person2:  It's not far away from home , It's - let me see – about 20 minutes'walk , Can you walk here ? 
 Person1:      I've thought of that , but what can I do with my car ? If only I had taken a taxi ! 
 Person2:  That's too bad , But don't worry.We ' ll put off dinner till one o'clock . 
 Person1:      I'm so terribly sorry to keep you waiting . 
 Person2:  It doesn't matter.Bye . 
 Person1:      Bye . 

0