If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No
Q: Excuse me , but is this dress on sale ?  The dress was on sale yesterday .  Are you sure ? I'd be happy to pay the sale price today .  I'm so sorry , but rules are rules .  OK , I'll just check out a few other stores .  I'm sorry I couldn't help you . 
A: 
No