You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I need to cancel my existing reservation, which is done recently. Can you please help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thank you for considering my request.

ASSISTANT: May I know your name to proceed further?

USER: My name is Brenda Mitchell.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for your valuable time, unfortunately no reservation found with your name.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Thank you of reaching us.