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 , Kevin . I hate to do this , but I have to cancel our appointment . 
 Person2:  Oh , no ! Why ? I was looking forward to seeing you at my new place . 
 Person1:      Yeah , I really wanted to come , too . But something unexpected in Shanghai have come up . I have to fly out for a few days , but I'll be back soon . 
 Person2:  No problem . Call me when you get back . 
 Person1:      I should have some free time next week . Say , next Wednesday evening ? 
 Person2:  That's good for me , but do you think you'll be back by then ? I'd really like to see you . 
 Person1:      Yeah , I'm expecting to come back on Tuesday . 
 Person2:  Great ! That's settled then . 
 Person1:      OK . 

0