Informal
This is my boss, Mr. Chen.
John, this is my secretary, Amy.
Good to meet you.
Nice to meet you too.
I'd like you to meet my co-worker, Collin White.
Collin, this is Susan Pen.
Nice to meet you.
My pleasure.
Have you met, Jason?
Jason, this is Teresa.
Hi, I'm Jill Watson.
I don't believe we've met. I'm Greg.
Formal
I'd like to introduce you to my dear friend, Mrs. Pamala.
Allow me to introduce myself/my colleague, Ms. Winters.
Let me introduce you to my colleague, Dean Richard.
Mr. Richard, this is David Porter from Aerospace Inc.
How do you do?
How do you do?
It's a pleasure meeting you.