You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, I am here to help you out with that.

USER: Thank you for accepting my request.

ASSISTANT: May I know your name to check your reservation status?

USER: Larry Rodriguez here.

ASSISTANT: Sorry Rodriguez, we couldn't find any reservation on your name in our records.

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

ASSISTANT: Thank you for reaching us.