If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No
Q: How much is this shirt ?  80 yuan .  It's rather expensive , isn't it ?  It's a bit . But I can give you a discount .  How about 50 yuan ?  No . I'm afraid the price is too low .  Then let's split the difference and I'll give you 60 yuan , OK ?  I'm sorry , but I think you should give me no less than 65 yuan .  All right . 
A: 
No