In Assassin's Creed Valhalla you can acquire the skill of charisma, which will give you additional dialogue options. Maybe you will find it useful in some missions. On this page of our guide, you will find out the location of the Flyting in Lunden.
Agusta is waiting for you in the southern part of the city. However, it will not be a typical Flyting. You will meet a charming woman who needs compliments, not insults.
The first dialogue must end with the 2nd answer - tell her that she's an image of elegance, beauty and charm.
Then, try the 1st answer; let her know that she's a subject suitable for writing songs.
One hit more, and you'll have her heart (or rather: complete the task); select the 1st answer. Thank her for the conversation and tell her it was a pleasure.