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:     Could you help me ?  
 Person2:  What do you need ?  
 Person1:      I can't seem to find my class .  
 Person2:  What building is it in ?  
 Person1:      It's in the C building .  
 Person2:  Oh , I know exactly where that is .  
 Person1:      Do you think you can tell me where it is ?  
 Person2:  Sure , what room number is it ?  
 Person1:      It's room number 261 .  
 Person2:  I have a class around there right now .  
 Person1:      Could you show me where it is ?  
 Person2:  No problem , come on . 

1