You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best aid you today?

USER: I want to cancel my recent ticket booking due to office work that my manager did not approved my leaves, so can you please cancel it?

ASSISTANT: Sure, we are glad to help you. Can I have your name to trace the details?

USER: Sure,my name is William Lewis.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thanks for being on hold, no reservation was found on your name in our database.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for reaching us.