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:     Hello , is that Mr . Li ?  
 Person2:  Yes , speaking . What can I do for you ?  
 Person1:      I am calling to check your information before the interview . What position did you apply ?  
 Person2:  I am applying for the waiter in your pub .  
 Person1:      Excuse me . Could you slow down a little ? I couldn't catch you .  
 Person2:  Sure . I will try my best to slow down . 

1