Why is it important to be polite and courteous when you are speaking to customers or other work mate

I need two-three sentences on this please or:I need two-three sentences on this pleaseor:If you don't know why it is important to be polite and courte

I need two-three
sentences on this please

or:I need two-three sentences on this please

or:If you don't know why it is important to be polite and courteous at any other time, then why break the habit of a lifetime? I'm sorry, but is this a real question? \"Why be nice to people?\"

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