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:     Hello sir , may I help you ? 
 Person2:  Yeah , I accidentally dropped my phone in the toilet . 
 Person1:      I see . Well , you have come to the right place . We have over one hundred models of more than twenty leading mobile phone manufacturers . 
 Person2:  Sounds good . I don ’ t want it to be too expensive , maybe something mid-range . 
 Person1:      We have this new ETC smart phone.It comes with the Android OS so you can download applications . It also has a built-in camera , mp3 player and touch screen . It works on the 3G network so you have fast access to the internet wherever you are . 
 Person2:  What about Wi-fi ? 
 Person1:      Of course ! You can access the internet from any hotspot as well as from home . 
 Person2:  One last thing . Is it waterproof ? 

1