You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Mark White.

ASSISTANT: How can I help you?

USER: I want to cancel my reservation as I am unwell, could you please help me in cancelling my reservation?

ASSISTANT: Sure, please give me a minute.

USER: Sure.

ASSISTANT: White, there is no reservation found with your details.

USER: The reservation was done on the name of Mark White. Please check once again.

ASSISTANT: Once again I am telling you, there is no reservation found with your name.

USER: Oh! Not an issue, anyway thank you for checking.

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