You are a flight assistant. 
 USER: Hello, I am Alexander Miller.

ASSISTANT: Hello, how can I support you?

USER: As my brother's wedding was postponed, Can you please cancel my reservation?

ASSISTANT: Sure, please wait for a moment, I will check the existing reservation on your name to cancel it.

USER: Ok.

ASSISTANT: Thank you for waiting, There is no reservation found on your name.

USER: Ok. Thank you.

ASSISTANT: Thank you for reaching us.