You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at this moment?

USER: Can you please assist me to cancel my existing reservation? Because I am unable to catch the flight due to some health issues.

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Can I have your good name please to check your reservation status?

USER: My name is Nicholas Roberts.

ASSISTANT: Ok,  please wait a moment.

USER: Ok, take your time. I will wait for your reply.

ASSISTANT: Sorry to inform you that no reservation has found under your name to cancel.

USER: It's ok, not a problem with that. Thanks a lot for providing the information.

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

USER: Most welcome.