Hi Vineetha Yadav…..
Yes there is a train the trainer accent course for accent not only in American accent but also in British and Australian accent.
Any accent you comes from a base acent known as the North Icelandic Accent. This accent is the mother of all accents. If you have a good expertise in this you can learn any other accent as it is compared to the mother tongue of all accents.
I will provide you the links to all this accents if you wish to know about them and if you are interested. Anyway you can also check
http://www.pinnacleprofessionals.com
if you wish to learn more about them.
Vineetha, I hope I have been of help. If you wish to have any further assistance please feel free to contact me or revert back to me.
Have a great day.
Thank you for reverting back to me.
Warm Regards,
Krsna Yadav.