This one paragraph contains a business grammar error. Find and correct it:
I'm sorry for my slow reply. I've been on vacation, and just received your message. Paula Havlicek in corporate communications is very knowledgeable about your concerns. You can reach her by phone at (609) 555-5555 or by email at phavlicek@acme.com.
Explanation: 
This contains a capitalization error. Nouns that designate a department within an organization should be capitalized. Here is the corrected version:
I'm sorry for my slow reply. I've been on vacation, and just received your message. Paula Havlicek in Corporate Communications is very knowledgeable about your concerns. You can reach her by phone at (609) 555-5555 or by email at phavlicek@acme.com.
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