напишите благодарственное письмо по английски

Dear ...Following the successful closure of the transaction between .... and .... with the participation of our company as the Introducing Broker, we would like to thank you for excellent cooperation and everyday heplful assistance.It is our sincere hope that you are satisfied with the service, which was provided to your Esteemed bankWe are looking forward to the continuation of our fruitful cooperation and partnership.Yours Sincerely