Commands to Siri Dictation to correct errors it's transcription?

Hello all,

I am new to Siri Dictation on my MacBook Pro (OS X 10.9.4), and want to know how to get Siri to correct transcription errors by a verbal command due to misunderstanding my southern drawl with hoarseness. Is this possible? If not, how can I best do this?

Thanks,

JCW_DonnyBoy