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:     What shall we do tonight ? 
 Person2:  How about the cinema ? 
 Person1:      That's a good idea.We haven't been there for ages . 
 Person2:  What would you suggest to see ? 
 Person1:      Oh , I don't know.It depends . 

1