You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you at this moment?

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

ASSISTANT: Yes, I can help you with that.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Sure, I am Debra Mitchell.

ASSISTANT: Ok, I will check your ticket status and let you know.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no active reservation found with your name in our database.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: You are welcome.  Thank you for approaching us.