If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No
One 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 . 
Solution is here: 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.

Now, solve this: Hello . Welcome !  Hello . I'd like to have my nails manicured .  This way please . We offer multiple manicure services here . Do you want a full service ?  I don't need the full service .  But the full service will make your nails look much prettier and it is on discount now .  No , thanks . All I need is painting and polishing .  OK . Please sit down . I hope you will be satisfied with our service .  Thanks very much . 
Solution:
Yes