You will be given a definition of a task first, then some input of the task.
If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No

I would like to return this pair of shoes .  Do you have a sales slip ?  Here it is .  Sorry , things on sale are not allowed to be refunded or exchanged .  Oh , but this pair of shoes are a bit too tight . Could I change them for something bigger ?  All right . Wait a minute . 
Output:
No