To quote for a Bark you've already responded to make sure you are in the 'My Responses' tab. From here select the conversation you'd like to quote for and click 'view.'
In the top left, you'll see an option to 'Provide an estimate'. Clicking this will bring up an option to quote for this Bark. Just fill out this screen and click 'Send Estimate'. This will then appear in the top left-hand corner of the screen for your reference. The buyer will then be notified of this update via email.