could you please help me in this letter!!!

Its post interview thanks giving letter is it perfect kindly rephrase if required

Good Afternoon,



It was nice meting you yesterday and I am looking forward to be a part of your organization, I assure you that I will exceed your expectations



I want to change as right now I think in current organisation I am not getting opportunity to work on challenging assignments & I am not been paid as per my qualification, skills and hard work I am putting in.



Hope to hear from you soon

Regards