Many quests and situations can be resolved through dialogue. To maximize your chances, invest heavily in Persuade, Lie, and Intimidate. Remember that companions also contribute to your skill checks; bring the right companions for specific situations (e.g., Vicar Max for Intimidate, Parvati for Engineering). Certain armor pieces and consumables can provide temporary buffs to dialogue skills. Don't be afraid to save before a critical dialogue choice and reload if you don't get the desired outcome.
