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?

ASSISTANT: Sure, can I know your name please?

USER: I am Gary Clark.

ASSISTANT: Sorry Clark, there is no reservation found on your name.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.