Part 1. Definition
If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No
Part 2. Example
So Dick , how about getting some coffee for tonight ?  Coffee ? I don ’ t honestly like that kind of stuff .  Come on , you can at least try a little , besides your cigarette .  What ’ s wrong with that ? Cigarette is the thing I go crazy for .  Not for me , Dick . 
Answer: Yes
Explanation: Here the first sentence indicates the soft tone and how exciting the speaker is for drinking coffee and it suggests overall happy tone and the output is yes. So this is a positive example.
Part 3. Exercise
Excuse me , miss . I don't think we need the MP4 any more . We would like to refund it .  May I see your receipt ?  Here you are .  I am sorry , sir . You bought it 2 weeks ago , and you can only refund it in one week . 
Answer:
No