You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I am Jeffery Carter. I want to cancel my ticket due my press conference has been cancelled.

ASSISTANT: Sure, we are glad to serve you. Please wait a moment, let me check your existing reservation and revert to you.

USER: Sure.

ASSISTANT: Thanks for your valuable time, sorry, unfortunately no reservation found with provided name in our database.

USER: Ok, thank you for informing.

ASSISTANT: Thank you for connecting with us, have a great day ahead.