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:     I'm not sure , is this our stop ?  
 Person2:  Yeah , get off the bus .  
 Person1:      Do you have any idea where we are ?  
 Person2:  I'm really not sure .  
 Person1:      This can't be the right stop .  
 Person2:  I don't think this is right .  
 Person1:      We got off too early , didn't we ?  
 Person2:  Yeah , we did get off too early .  
 Person1:      I should've just stayed on the bus .  
 Person2:  I messed up .  
 Person1:      Great , we have to walk now .  
 Person2:  You want to wait for the next bus ? 

1