Definition: If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No
Input: I want to buy a rain coat . Could you please show me one ?  With pleasure . What color do you like ?  I like yellow best . How much does it cost ?  It costs 275 yuan , Miss .  It's nice , but that's very steep for a rain coat . Could you give me a 20 percent discount ?  Sorry , we don't give discounts .  In that case , I don't think I'll buy one here . 
Output:
No