"Velsa let me in on one of the perks of being a member of the Thieves Guild: Heists. She's sending me to the guild's heist master to get vetted for work."
Or, if the Vestige obatins the quest from Velsa's note instead of from Velsa herself:
"Velsa left me a note to discuss one of the perks of being a member of the Thieves Guild: Heists."
- 302 gold
- 5 Thieves Guild reputation