Yes, this sentence sounds correct to me.
no
Deliver what customer asking
AK, but this one could be use used for many other abbreviations for more info, please go to http://acronyms.thefreedictionary.com/acknowledgment
To admit the existence, reality, or truth of. To recognize as being valid or having force or power. To express recognition of: acknowledge a friend's smile. To express thanks or gratitude for. To...