instruction:
If the emotion of happiness is present in the one of the dialogues of the conversation, then output Yes otherwise output No
question:
Let me help you with that .  Thanks very much .  You really shouldn't be lifting this by yourself .  I know , but there was nobody else . 
answer:
Yes


question:
Did your eye doctor prescribe you contact lenses ?  No , I ’ d like to know something about contact lenses .  Oh , I see . We have both hard and soft contact lenses . They are very popular , but a little more expensive than ordinary glasses .  I have found I ’ m short-sighted recently . I need to wear glasses . As a student , it ’ s better for me to wear ordinary glasses instead of contact lenses .  We have many kinds of glasses here . Which frames do you like best ?  I think the square-shaped ones will be the best for me .  What about this pair ? They are the ' in ' things now in optical wear . Try them on .  They fit me very well . I like them .  Please go to receive optometry first over there . 
answer:
Yes


question:
You stepped on my foot !  Sorry . I didn't mean to . 
answer:

No


