are the meaning of "David Hall" and "D. N. Hall" same in the text?
MR.HALL：I left a suitcase on the train to London the other day.
ATTENDANT：Can you describe it,sir?
MR.HALL：It's a small blue case and it's got a zip.There's a label on the handle with my name and address on it.
ATTENDANT：Is this case yours?
MR.HALL：No,that's not mine.
ATTENDANT：What about this one?This one's got a label.
MR.HALL：Let me see it.
ATTENDANE：What's your name and address?
MR.HALL：David Hall, 83, Bridge Street.
ATTENDANT：That's right.D. N. Hall, 83, Bridge Street.
ATTENDANT：Three pounds fifty pence,please
MR.HALL：Here you are.
ATTENDANT：What's the matter?
MR.HALL：This case doesn't belong to me!You've given me the wrong case!
1.are the meaning of "David Hall" and "D. N. Hall" same in the text?
Is the abbreviation for David "D"? what about the"N" ?
2. if "David Hall" and "D. N. Hall" have the same meaning.why did the attendant get MR. Hall the wrong case?