You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Charles Lee. I want to cancel my recent reservation, can you help me?

ASSISTANT: Sure, I am glad to help you out with that. Please give me a moment to check your reservation status.

USER: Thank you. I will wait for your response.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: That's ok,  no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.