Menţionează rolul virgulei în secvența: — Ei, ce ziceți?.

The given question is:

"Mention the role of the comma in the sequence: - Well, what do you say?"

The role of the comma is to indicate a separation between words to make a specific sense of the statement.

Actually, the official function of commas is to separate words, ideas, phrases to prevent a misreading, and to give a specific signification so readers won't capture the intended sense.