You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my recent reservation due to some health issue. Can you help me?

ASSISTANT: Sure, may I know your name?

USER: Sure, I am Carol Nelson.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Sure, take your time.

ASSISTANT: Sorry Carol Nelson, no reservation is available by your name.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.