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 ! Can I help you ? 
 Person2:  could you show me where the Chinese-style clothing is located ? I want to buy a silk coat . 
 Person1:      this way , please . Here they are . They're all handmade . 
 Person2:  oh , they look nice . May I try that back one on ? 
 Person1:      of course . The fitting room is right over there . 
 Person2:  do you have a medium in the same color ? This one is a little tight . 
 Person1:      I'm sorry . All the back of that size are sold out . Would you like a red one ? 
 Person2:  ok , let me try it on . what do you think ? 
 Person1:      oh , that suits you very well . Besides it is believed in China that the red color brings happiness and good luck . 
 Person2:  really ? I'll take it , and I'm leaving here tomorrow . Is it possible for you to send one in black to me by mail when you gte it in ? 
 Person1:      our pleasure . Please fill out this form , leaving your address and telephone number . 
 Person2:  thanks . Who much would that come to ? 
 Person1:      let me see ... 

1