I need your help pls!

Dear Teachers and friends,
The scenario is this,I emailed my cv and personal letter to president of a company, hopefully he replied and asked me if I am interested in this position ,contact regional manager and arrange a time to meet.he also forward this reply to the regional manager .my question is;what should I write to manager? do I need to write about myself again as personal statement that I already sent to president of company or just refer to his reply would be enough? Really appreciate your help.this is my first time applying and I don’t want to miss this opportunity.thank you for your helps and advice.