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:     Is there anything I can do for you ?  
 Person2:  I'm planning a trip to Europe .  
 Person1:      Have you decided which city you want to go ?  
 Person2:  Well , what's the price of this route ?  
 Person1:      That's $ 400 and we will visit 4 cities . 

1