Modelo carta invitaciónNum. 1Mr. Jack Chang 
Uptown Mobiles 
Terrace road 
Plaistow, London E13Dear Mr. Chang

Please accept this little letter as my resignation, effective (1st October).

This was a very difficult decision to make. I am very grateful for the rewarding employment I've had with UPTOWN MOBILES . After much consideration, though, I will accept a new position with another company.

Best regards