With due respect, my name is _______ (name) working as a __________ (designation) having employee ID __________ (employee ID).
I write this email to bring to your attention that I have joined this organization as __________ (job title) and currently working as __________ (present job title) and I request you to kindly change my job profile to ____________ (mention required job profile). I believe that I can do better in that and I assure you that I will contribute to the growth and success of this organization.
I hope that you will consider this as a genuine request and approve my request. If you wish to contact me, you can always feel free to contact me at any time.
_____________ (Employee ID Number),
_____________ (Contact details)