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:     Are you ready to go the concert ?  
 Person2:  Yes . Should we go there by bus so we aren't late ?  
 Person1:      Actually , why don't we go there by bike ? We could get stuck in traffic if we travel by bus in rush hour .  
 Person2:  That's true . Cycling is good for our environment , too . Let me just get my helmet then .  
 Person1:      Is your helmet comfortable ?  
 Person2:  Not really , but I liked the design , so I got it .  
 Person1:      Maybe you should think about getting a round helmet ; they're better .  
 Person2:  I'll think about it .  
 Person1:      Is that your new bicycle ?  
 Person2:  Yes , my father gave it to me for my birthday . Do you like it ?  
 Person1:      It's the newest 10 speed cycling mountain bike . These are really expensive !  
 Person2:  Nothing but the best from my dad . I like everything about it except for the brakes . They are a bit sticky .  
 Person1:      I can fix those for you . Is there anything else wrong with it ?  
 Person2:  Well , my saddle is too low for me . Do you know how to change the height ?  
 Person1:      That's easy . It's important to have the saddle high enough so that your legs can extend fully when you are on your bicycle .  
 Person2:  Is that why my knees have felt sore after every time I've ridden my bike ?  
 Person1:      It's possible . Give me a minute and I can fix these for you and then we can go . 

1