You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Anthony Williams.

ASSISTANT: How may I help you? Nice to meet you Anthony.

USER: Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, I will help you in the cancellation of flight reservation. Please wait for a moment.

USER: Ok, sure.

ASSISTANT: I have searched online but sorry to say that I could not find your flight reservation to cancel it.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you.