You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Katherine Collins here. I need to cancel my recent reservation because my health was not good, can you help me?

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

USER: Sure, take your own time.

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

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.