You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Due to some health issue, I want to cancel my recent reservation. Can you please help me with this?

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

USER: Sure, I am Ronald Jackson.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

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

USER: Ok, Thank you.

ASSISTANT: Thank you for opting us, have a good day.