You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Gary Davis. I would like to change my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure, I am glad to help you with changing your reservation.

USER: Thank you for accepting my request.

ASSISTANT: Please wait for a while, let me check your reservation status.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry to inform you that, there is no reservation found on your name to change.

USER: Ok,  not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.