You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I am Nancy Allen. I would like cancel my recent booking due to some health issues, can you help in my ticket cancellation?

ASSISTANT: Ok Allen, I will help you in cancelling your reservation. Let me check for your reservation status in our website.

USER: Sure.

ASSISTANT: Sorry Allen, I have not found any reservation by your name in our website.

USER: That's fine, no problem with that.

ASSISTANT: Thank you for contacting us and take care of yourself.

USER: Thank you for your service.