You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you at this moment?

USER: I need to cancel my reservation due to I am unable to catch the flight on reserved dates. So please help me with that.

ASSISTANT: Sure, I am here to help you with the ticket cancellation.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Sure, myself Anna Evans.

ASSISTANT: Sorry for the trouble, there is no reservation found on your name to cancel.

USER: Oh! It may not be booked properly while booking due to server issue. Anyway, thank you for your time.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: Most welcome.