Confidence Man

Confidence Man is a quest in Fallout 4, where you help the Diamond City Radio personality Travis Miles gain confidence by setting up a staged bar fight.

Quick walkthrough
This quest is given by Vadim Bobrov in the Dugout Inn after the player has encountered Travis at the Diamond City Radio Station in Diamond City. You will have to wait until an NPC like a guard tells you that Vadim was looking for you at the Dugout Inn before you can start the quest, or speak with Hawthorne at the INN and go to the locations he provides and then return to Vadim. The quest is to boost Travis' confidence. This will change how he speaks on the radio.
 * 1) Talk to Vadim. He will tell you that he's going to stage a fight to boost Travis' confidence.
 * 2) Vadim will have the player character come back at 6:00pm to stage the fight.
 * 3) Speak with Travis and convince him to stand up for himself.
 * 4) Defeat Gouger and Bull and talk to Vadim.
 * 5) Vadim will have the Sole Survivor set up Travis and Scarlett, the waitress, to once again boost his confidence.
 * 6) When the player character returns from speaking with Scarlett, Vadim will have been kidnapped by raiders. They're holding him at the Beantown Brewery, north of Diamond City.
 * 7) Speak with Travis and he'll ask to come along.
 * 8) Meet Travis at the Brewery and clear out the raiders inside.
 * 9) Find Vadim in the back room and speak to Travis again.

Bugs

 * There is a glitch that causes both Gouger and Bull to be set to essential, making the quest impossible to complete without the use of console commands. Two possible fixes are detailed here and here also this bug can be resolved on the console version of the game or without using console commands by loading a save that is before the player speaks to Travis (the objective "speak to Travis") The player must then go to Beantown Brewery (without talking to Travis) and kill Bull and Gouger who will now be killable. Then the player can continue the quest as normal.
 * Note, this bug has been reported fixed in the beta update available on Steam (right-click on the game, select "Properties," and opt in from the "Betas" tab).


 * Scarlett may disappear during the fight, making it impossible to talk to her to finish the quest.