You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I support you?

USER: My paintings exhibition venue is changed from one place to another. Can you help me in change in existing reservation?

ASSISTANT: Sure, I am glad to help you.

USER: Ok, I am Kenneth Mitchell.

ASSISTANT: To check with your existing reservation. May I know your good name please?

USER: I have provided you the name.

ASSISTANT: Ok, Thank you. Please wait for few minutes.

USER: Ok.

ASSISTANT: Thank you for waiting, We have searched our data base and found no existing reservation registered on Kenneth Mitchell.

USER: Thanks for sharing the information.

ASSISTANT: Thank you for opting us to change your existing reservation. Have a good day.