Further to your letter of ...
Here's the information you wanted.
I trust you will find the following points of interest.
Let me know when you have a definite date.
Why don't we ... ?
I would be very grateful i you could send me ...
We propose ...
I got your letter about ...
May I remind you that ...
Can you send me details on ... ?
Don't forget that ...
Could you please confirm the date?
