Detailed Instructions: If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No
See one example below:
Problem: 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: 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.

Problem: What can I do for you ?  Can I have a look at your handworks ?  All right . This way , please .  You have quite a range , haven't you ?  Yes , sir .  They are all produced in China , aren't they ?  Yes , they are all distinctive Chinese .  Could you please select me one ?  How do you like this one ? It's very beautiful .  Oh , I like it very much . How much does it cost ?  350 yuan .  OK . I'll take it . 
Solution:
Yes