where modify email template

[MrEmz]

Greetings! Where can i modify the email template that is used to send both the client and server for example when the client
booked a reservation. Then the system was notify an email into client for the " New reservation notification" , but the content of email is already "Payment is pending Reservation is not confirmed" and I want to make change it "Your Reservation is confirmed" as directly confirmed.

Please give me the path or the file name, Where can i modify it?

and where can i find the $resmaster? what file name and path?

I hope you'll reply in ASAP..

Thank you... 

Regards,

[datahell]

administrator/components/com_reservations/includes/resmailer.class.php