You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Edward Anderson here.

ASSISTANT: How may I help you out?

USER: Please cancel my flight ticket which I have 2 months back to attend a meeting.

ASSISTANT: Sure, I will help you out.

USER: Thank you.

ASSISTANT: Sorry, there are no reservations found.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for choosing us.