You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Samuel Brown here. I would like to cancel my reservation due to some health issues, can you please help me with that?

ASSISTANT: Yes, I can help you. Give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: That's ok, no problem. Thank you for checking out.

ASSISTANT: Thank you for contacting us.