You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Unfortunately, I would like to cancel my reservation due to some health problems, can you please help me in this condition?

ASSISTANT: Yes, I can help you with that.

USER: Thank you.

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

USER: Ok, no problem. My name is Timothy Adams. Thank you for your service.

ASSISTANT: Thank you.