Berikan contoh teks introduce friend

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Do you know Kartika?
No, I don't think so. 
Have you met Kartika?
No, I haven't.
This is a friend of mine,Okki.
Hi, glad to meet you. I am Okki.
Ika, this is Okki, my friend. 
Hello, Okki. Pleased to meet you. 
May I introduce my friend, Mrs. Suryani?
I am glad to know you.
Please allow me to introduce our new Administration Manager.
It is nice to see you.
Let me introduce you to Mrs. Lina our new Marketing Manager.  Mrs. Lina. this is Mr. Lutfi from Java Plantation Company.
How do you do? It is very nice to meet you.