Definition: If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No
Input: can I see these silk ties ?  No problem .  I ’ ll take this one .  Good . Anything else ? The tie pins ? The cuff links ?  No , thank you . I want to have a look at that scarf .  Ok . We have several kinds of scarves here . Let me get them for you . Just wait a minute .  Oh . I like this one . I have been looking for this color and design . Please wrap it for me , and I ’ ll take it . 
Output:
Yes