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:     Where are you going to spend your holidays this year , Tom ?  
 Person2:  We may go abroad , my wife wants to go to Egypt , and I'd like to go there too . We haven't made up our mind yet .  
 Person1:      Will you travel by sea or by air ?  
 Person2:  We may travel by sea . It's cheaper .  
 Person1:      I'm sure you'll enjoy yourselves . 

1