You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to cancel my recent reservation because my health condition was not good, Can you help me?

ASSISTANT: Sure, may I know your name?

USER: Stephen Mitchell here.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

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

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.