Dear Mr. Smith:
Allow me to express my sincere gratitude for the career advancement given me. I am very grateful and honored to accept this promotion.
The manifestation of your unwavering support and guidance further by this opportunity given me, streghten my confidence and motivates me more to give my darnest best in facing the new challenges and ultimately be a partner in attaining our corporate goal and eventual growth of our company
Thank you so much.
Respectfully yours