If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No
One example is below.
Q: 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 . 
A: Yes
Rationale: 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.
Q: Are you going to buy a bicycle ?  I ’ m thinking about it . How much is it ?  ¥ 350 .  Oh , dear . It ’ s too expensive . Can you give me a better price ?  Your discount is already included . Normally we charge ¥ 400 , but now we can give you a special price . This is our sale period .  It ’ s still too much . Can ’ t you make it any cheaper than that ?  Sorry , but this is the best price . You can ’ t get it any cheaper than here .  I see . Can I pay by traveler ’ s checks ?  I'm afraid you can ’ t . You ’ re welcome to pay in cash . 
A:
No