Translate the following passage into Chinese. Thank you for your letter dated June 5th, informing us of your clients' complaints about our services. This is our fault. We failed to tell the local guide that the flight had changed, so that he didn't show up on time. Please accept our sincere apology for the inconvenience caused to the guests. And we will remit $60 to remedy the transportation cost. We assure you that such an error will never occur again. We look forward to our next cooperation.