Audio recording for language transcription in US Boston accent (Natives preferred)

We are looking for pair of people to mimic and do call center type recording in US English (Boston ) accent. We need more than 15 speech hours of recording in fact more if possible. One pair of user can record up to 3 hours speech. If we get any vendor that will be great but individuals pair of free lancers are also welcome. We will even accept off the shelf data if is readily available if it meets the accent criteria however the rates would be different and lesser. Pairs have to mimic as if it is a call center conversation. Each file should be of 10 - 15 min but less than 20 min of audio. USD 80.00 per pair per speech hour would be paid.