You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I want to cancel my recent reservation due to bad health issues. Can you help me with that.

ASSISTANT: Yes, I am here to help you. May I know your name please?

USER: Thank you. I am David Moore.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: Thank you for your time, sorry no reservation found on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us, have a nice day.