Best amity talking:

Intérêts successif = 7
Services accumulés = 528
Services Max = 124
1 Foyer des nagas
2 La chute du château de Cron
3 L'histoire des véhicules
4 La grande bibliothèque de Calpheon
5 Le grand exode des barbares
6 La mort douteuse d'un jeune Roi
7 Résistance ou Révolution?

Successive Interest = 7
Accrued services = 528
Services Max = 124
1 Home of the naga
2 The fall of the castle of Cron
3 Vehicle history
4 The Great Calpheon Library
5 The great exodus of the barbarians
6 The dubious death of a young King
7 Resistance or Revolution?

Aufeinanderfolgende Zinsen = 7
Dienstleistungen akkumuliert 528 =
Dienstleistungen Max = 124
1 Kamin naga
2 Der Fall der Burg Cron
3 Die Geschichte der Fahrzeuge
4 Die große Bibliothek von Calpheon
5 Der große Exodus der Barbaren
6 fragwürdige Tod eines jungen Königs
7 Resistance oder Revolution?

Some of the English translations in Dakota62's comment are not accurate, pay attention when you use his/her amity game suggestion.

The interest and favor range of this NPC is really bad, so you may as well skip any that are significantly over 25-30 on either interest or favor. With 28 interest and 26 favor, I've managed to get over 150 amity from a single conversation of three talks (which is all you need to get the two daily quests):

Naga Home
Fall of Cron Castle
History of Vehicles
Resistance or Revolution?
The Great Move of the Barbarians
Legacy of a 30 Year Invasion
Black Death