You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

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

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name please.

USER: Sure, I am Rebecca Martin.

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

USER: That's fine, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.