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:     Excuse me , sir . Is there anything I can do for you ? 
 Person2:  Yes . I'd like to change some money , please . 
 Person1:      All right . How much would you like to change ? 
 Person2:  Let me see . I think maybe 600 USD at least . 
 Person1:      Pardon ? 
 Person2:  Six hundred US dollars . 
 Person1:      I'm sorry , sir , after 7 
 Person2:  But I am badly in need of the amount . Might I ask you to make an exception for me ? 
 Person1:      I'm afraid we cannot help you , sir , because that would be violating the regulations . I owe an apology for doing nothing about it . 
 Person2:  It's just too bad . I have to leave it as it is , and thank you just the same . 

1