You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: William Mitchell here. Can you help me to cancel my recent reservation?

ASSISTANT: Sure, I will help you with the flight cancellation.

USER: Good to hear that from you.

ASSISTANT: Sorry, I regret to inform you that there is no reservation on your name.

USER: That is fine. Thank you for your help.

ASSISTANT: Thanks for reaching to us.