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

Could I have a refund on this ?  I'm afraid you can ’ t .  Then can I exchange it for something else with the same price ?  Just a moment . Let me find out . Our manager Wil be here in a minute . So will you speak to him ?  OK . I will . 
Output:
No