Use this SR if a user was upset but the Specialist assisted the user professionally. 

Thank you for contacting [Client's Name] End-User Support!

We would like to sincerely apologize for the experience you had in Live Support Chat. We strive to maintain a high level of professionalism when assisting users. Was your initial issue resolved? If not, let us know. We’ll be happy to assist you further.

Apologies once more. Should you need further assistance with any issue or inquiry, feel free to contact us. We are more than happy to assist. Have a great day!

Sincerely,