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:     Good morning . Can I help you ? 
 Person2:  Good morning . I would like to make a reservation to Hong Kong for August 2 . 
 Person1:      Just a moment , please . I am sorry , sir . There is no ticket available on that day . But we have flights for Hong Kong the next day . 
 Person2:  May I inquire about the departure time ? 
 Person1:      A 9:12 flight in the morning and a 14:00 flight in the afternoon . 
 Person2:  When will the plane reach Hong Kong for the morning flight ? 
 Person1:      At 10:20 
 Person2:  OK . I would like to book a ticket for that one . 
 Person1:      All right , sir . Please reconfirm your ticket no later than 12 noon two days before the flight ; otherwise , your reservation will automatically be canceled . 
 Person2:  Yes , I know . What's the fare ? 
 Person1:      It's 500 dollars , not including ground transportation fares between the airport and downtown . 
 Person2:  I see . Will it be doubled for the round trip ? 
 Person1:      Right , sir . And please do not forget to bring a valid travel document with you when you buy the tickets . 
 Person2:  I won't . 

1