We greatly appreciate your letter describing the assistance you received in solving your air-conditioning problems. We are now in our fifty year of operation, and we receive many letters like your indicating a high level of customer satisfaction with our installation. We are pleased that our technical staff assisted you so capably. We would like you to know that it you need to contact us at any time in the future. Our engineers will be equally responsive to your request for assistance. If we can be of service to you again, please let us know. Thank you again for your very kind letter.

　承蒙來信贊揚本公司提供的空調維修工程服務，欣喜不已。五年前開業(yè)至今，屢獲客戶來函嘉獎，本公司榮幸之至。欣悉貴公司識技術人員的服務，他日苛有任何需要，亦請與本公司聯絡，本公司定當提供優(yōu)秀技師，竭誠效勞。在此謹再衷心感謝貴公司的贊賞，并請繼續(xù)保持聯絡。