Read the following dialogue to answer the question!

Yuli: Hi, Anisa!

Anisa: Hi, You look great in that pink scarf. What a nice scarf!

Yuli: How nice of you to say that.

Anisa: I've never seen you in that hat. Where did you buy it?

Yuli: My mom bought it for me when she went to the market.

Anisa: I see.

Yuli: Look! The teacher is coming!

Anisa: Mr.Asep!

Mr. Asep: Hi, How are you?

Yuli: We're good, thanks. How about you?

Mr. Asep: Excellent!

Yuli: I love your hair cut, Mr. Asep.

Anisa: Yes, you are looking good with your hairstyle.

Mr. Asep: Thanks a lot. Yuli, I heard you won the Math Olympiad. Is it true?

Yuli: Yes, I won the second prize last week.

Anisa: She is good at it.

Mr. Asep: I'm glad to hear that. Congratulation, Yuli!

Yuli: Thank you very much for saying so.

How many people are in the dialogue?