English Audio Transcription to Word

I've got a 20-minute audio file in clear English that I need transcribed into a Word document.

Key Requirements:
- Transcription: The entire 20-minute audio needs to be accurately transcribed into written English. This includes capturing all the content, pauses, and nuances of the conversation.
- Format: The final transcription should be delivered in Word format.

Additional Info:
- Audio Quality: The audio is clear and doesn't have any background noise or disturbances.
- The conversation must be designated to different speakers.