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:     Are you interested in mountaineering ?  
 Person2:  Yes . in some sense . I should say I like mountain climbing , you know , because I'm not so professional . How about you ?  
 Person1:      I'm the same with you , an amateur mountain climber . 1 went climbing in the Rocky Mountains with my friends last summer vacation . We spent two days in the mountains .  
 Person2:  How did you spend the night there ?  
 Person1:      We pitched a tent in the night , waiting for the sunrise . Wow ! It was too beautiful .  
 Person2:  I had a similar experience , but that was on the top of Tasha Mountain in my country .  
 Person1:      Tasha Mountain ? It's very famous in China , isn't it ?  
 Person2:  Yes.It IS one of the Five Mountains .  
 Person1:      I want to climb Tasha Mountain this summer vacation . Would you be my guide ?  
 Person2:  I'd love to . 

1