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: Ah , here we are .  This is the place I was telling you about .  Would you like to sit near the window ?  Good .  Let's have a look at the menu . Oh , there isn't a menu . Do you think you could ask the people at the next table if we could look at their menu ?  Yes , of course . Excuse me . Could you possibly let us see your menu ? Oh . They haven't got one either . 
A:
Yes