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 , Mr.Green . This is Lin Tong . How are you ?  
 Person2:  Hi , Mr.Lin . I am leaving tomorrow and I am just packing .  
 Person1:      Oh , sorry to interrupt you . But I am calling to say goodbye to you . I am awfully sorry to tell you that I am afraid I could not see you off at the airport tomorrow , because I will have to attend a very important meeting .  
 Person2:  It doesn't matter , Mr.Lin . I can understand . I know you are always very busy . Work must come first .  
 Person1:      Thanks a lot . You have been here for almost three weeks . How time flies !  
 Person2:  Yes . And I would like to convey my thanks to you for your help during my stay here in Nanjing .  
 Person1:      It is our pleasure . It has been a great pleasure to work with you .  
 Person2:  Me too . I am looking forward to cooperating with you again .  
 Person1:      Really ? Great ! We will . Well , what's your flight number ? When are you leaving tomorrow ?  
 Person2:  It's Flight No . 104 , Northey Airlines , which leaves at ten O'dock tomorrow evening .  
 Person1:      OK , I will send someone to see you off .  
 Person2:  That is so thoughtful of you .  
 Person1:      My pleasure . Take care and have a nice trip .  
 Person2:  Thanks a lot . My wife and I will be welcoming and looking forward to your visit .  
 Person1:      Let's call it a deal . Hope to see you again soon . Keep in touch then . Byebye .  
 Person2:  Goodbye . Thanks again . 

1