Looking on the internet deeply has found these results:

I am the assistant of Mr. is the most popular phrase on the web.

I am the assistant to Mr. 16 results on the web	I am the assistant of Mr. 18 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
This is the assistant of Mr. Messignac. Mr. Holm is assistant to Mr. Stiller, our director. My name is Marita Covarrubias. I am the assistant to the special representative. I am the new assistant to Mr. Bryan Collins. I am the assistant to Blue tonight bring out a bored girl? I am assistant to Mr. William Charles, President of one of New York's premier commercial real estate firms, and I will have you know, sir, And I believe you've already met our tireless research assistant, Mr. Fisher... I'm Jane Newfeld, the assistant to Mr. Munder.	I am the new assistant to Mr. Bryan Collins. My name is Marita Covarrubias. I am the assistant to the special representative. I'm Jane Newfeld, the assistant to Mr. Munder. I am assistant to Mr. William Charles, President of one of New York's premier commercial real estate firms, and I will have you know, sir, This is the assistant of Mr. Messignac. Harry, I don't believe you have met my assistant, Mr. Lee. And I believe you've already met our tireless research assistant, Mr. Fisher... I'll hand you over to one of my assistants, Mr. Boltchak.

I am the assistant to Mr.

16 results on the web

I am the assistant of Mr.

18 results on the web

More popular!

This is the assistant of Mr. Messignac.
Mr. Holm is assistant to Mr. Stiller, our director.
My name is Marita Covarrubias. I am the assistant to the special representative.
I am the new assistant to Mr. Bryan Collins.
I am the assistant to Blue tonight bring out a bored girl?
I am assistant to Mr. William Charles, President of one of New York's premier commercial real estate firms, and I will have you know, sir,
And I believe you've already met our tireless research assistant, Mr. Fisher...
I'm Jane Newfeld, the assistant to Mr. Munder.

I am the new assistant to Mr. Bryan Collins.
My name is Marita Covarrubias. I am the assistant to the special representative.
I'm Jane Newfeld, the assistant to Mr. Munder.
I am assistant to Mr. William Charles, President of one of New York's premier commercial real estate firms, and I will have you know, sir,
This is the assistant of Mr. Messignac.
Harry, I don't believe you have met my assistant, Mr. Lee.
And I believe you've already met our tireless research assistant, Mr. Fisher...
I'll hand you over to one of my assistants, Mr. Boltchak.