You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please cancel my recent reservation?

ASSISTANT: Sure, may I know your good name?

USER: I am Sarah Walker.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that, there is no reservation found as per your name in our database.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us with a query.