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:     It's almost Christmas . What are you doing this weekend ? 
 Person2:  Nothing special , just working . Why do you ask ? 
 Person1:      Well , I still haven't finished my Christmas shopping . Do you want to go shopping with me this weekend ? 
 Person2:  I'd like to , but I'm not sure if I can . Work has been really busy lately . Why don't we go on Friday instead ? 
 Person1:      Friday's not good . I think the stores will be very crowded and I have to work . 
 Person2:  OK , then let's try to go this weekend . I should know if I can go by Friday . Is it OK if I call you then ? 
 Person1:      Yeah , that's fine . 
 Person2:  What's your number ? 
 Person1:      233-331-8828 . Let me give you my email address too . It's Tom861@gmail.com 
 Person2:  OK , I'll talk to you soon . 
 Person1:      OK . 

1