You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, may I know your name?

USER: Thank you for considering my request. Myself Stephen Clark.

ASSISTANT: Wait a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry, there was no reservation found on your name.

USER: Not an issue, anyway thank you for your service.

ASSISTANT: Thank you for choosing us.