Instructions: If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No
Input: This skirt is too tight . I would like to return it please . Do I need to go to the customer's service desk ?  I can help you with that . Do you still have your receipt ?  No , I receive this as a birthday present , but the price tag is still on the skirt though . Will that be OK ?  Oh , yes , that will help me a lot .  Do you have any more skirts in this style ? I would like to find a size larger .  I'm sorry . I think we're out of this skirt in this color . Do you want me to call another one of our store to see if it's available there ?  No , that's all right . I'll just look for something else .  Well , your refund total is 50 dollars . 
Output:
No