You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: I want to cancel my recent reservation, as my health is not good to travel. Can you please help me with this?

ASSISTANT: Sure, may I know your name?

USER: I am Jonathan Brown.

ASSISTANT: Sorry, there is no reservation found.

USER: Ok, not an issue.

ASSISTANT: Thank you for opting us.

USER: Thank you for your time.