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:     Hi , Mark ! Long time no see ! 
 Person2:  Hi , Alex ! 
 Person1:      Where have you been ? 
 Person2:  I just got back from London . 
 Person1:      How was your flight ? 
 Person2:  It was OK . There was a lot of turbulence , though . 
 Person1:      That ’ s too bad . How long was the flight ? 
 Person2:  It was 10 hours . 
 Person1:      Did you have a layover ? 
 Person2:  Yes , in Paris , France . 
 Person1:      Did you buy anything in the duty-free stores ? 
 Person2:  Yes . I bought two boxed of chocolate – one for me and one for you ! 
 Person1:      Oh , you didn ’ t have to ... 
 Person2:  It was nothing . 

0