Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. Your task is to classify the conversation either convey 'No emotion' or 'Happiness' by providing '1' and '0', respectively.
Input: Person1: Alice , I never knew you had such a lovely voice . You really can sing , can't you ?
Person2: Thanks , Mark . I used to be a member of the school choir .
Person1: No wonder you can control your voice so well . You are a professional singer .
Person2: Well , you are flattering me . I wouldn't say I am a professional , but I did receive some training at school . My music teacher used to be a professional singer .
Person1: Well , a good teacher makes good students .
Person2: You are quite right .
Output:
1