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 afternoon.Swiss Airline.Miss Grown speaking . Can I help you ? 
 Person2:  Yes . I'd like to make a reservation to Los Angeles on Sep . 19th . 
 Person1:      Just a moment , please . Let me check for you . ( A moment later ) Thank you for waiting . I am sorry but our flights are fully booked on that day.The next available flight leaves at 4:00 pm on 20th . Shall I reserve you a seat on it ? 
 Person2:  Yes , please , thank you . 

1