If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No
Q: Anna , Would you like to dance ?  I ’ d love to , but I ’ m a terrible dancer . I ’ m afraid I may step on your toes .  Don ’ t worry about it . I ’ ll show you how . It ’ s a piece of cake .  Thank you . I ’ ll try my best . 
A: 
Yes