When the Lord asked, "Whom shall I send?", how did Isaiah answer?

Answer: Here am I. Send me!

After his lips were cleansed, Isaiah heard the Lord ask, "Who will go for Us?" and answered, "Here am I. Send me!"

“Then I heard the voice of the Lord saying: “Whom shall I send? Who will go for Us?” And I said: “Here am I. Send me!””— Isaiah 6:8 (BSB)