You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Helen Wright. Owing to an emergency, I want to cancel my recent reservation. Can you please help me out?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Ok, take your time.

ASSISTANT: Sorry to say, no reservation found on your name in my database. Thank you for reaching us, have a nice day.

USER: That's ok, thank you for your information.