You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to cancel my recent reservation because of my health issues. Can you please help me out?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Sure, my name is Gary Lee.

ASSISTANT: There is no reservation on your name in our database.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.