You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephen Gonzalez.

ASSISTANT: How may I help you?

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, I am gleeful to help you. Please wait for a minute.

USER: Thank you. Sure.

ASSISTANT: Sorry Stephen, there are no reservation found on your name.

USER: No problem, Thanks for your information.

ASSISTANT: Thank you for reaching us.