May we take this opportunity to thank you for kindly instructing us to advise you on, and to assist you with, your recent case.
Now that your case has concluded, we would be extremely grateful if you would take a brief moment to complete our Client Questionnaire because we are keen to know how you thought we performed and how you think we can improve.
(It should not take more than 1 to 2 minutes to complete the Questionnaire).