Casual American Narrative Voiceover

I’m producing a set of narrative-style videos and need a native-sounding American voice to bring them to life. Each finished piece will run between 5 and 15 minutes, and the overall tone should feel relaxed, conversational, and engaging—never overly dramatic or sales-y. You’ll receive the final scripts in advance with any pronunciation notes. I’m looking for clean, broadcast-quality audio (WAV or 320 kbps MP3), free of background noise and ready to drop straight onto the timeline. Please include a short custom sample or a link to work that shows a similar casual delivery so I can confirm the fit before we move into full recording. Turnaround time, any minor pickup policy, and your preferred file-naming conventions are useful to note in your proposal.