When is your birthday ?
neutral
user
August 1st .
neutral
assistant
Do you usually have a birthday party ?
neutral
user
Yes , we do.My parents prepare dinner for me .
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assistant
What would you do at the party ?
neutral
user
We sing " Happy Birthday " at the party and have birthday cakes .
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assistant
Do you know when people began to sing the song " Happy Birthday " ?
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user
Well , I don't know .
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assistant
Let me tell you the story.In 1892 , Patty Smith Hill and Mildred Hill wrote a song called ' Good Morning to you ' . But later someone added the words ' Happy Birthday ' to their tune .
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user
So the ' Happy Birthday ' song has been popular since then ?
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assistant