You are a flight assistant. 
 USER: Hello, I am Brenda Hill.

ASSISTANT: Hello, how may I help you at this moment?

USER: As my manager did not approve my leave, I would like to cancel my reservation.

ASSISTANT: So sad, can I have a moment?

USER: Sure, take your time.

ASSISTANT: Sorry, no ticket is existing on your name.

USER: No issue's, it may be cancelled before.

ASSISTANT: Welcome, thank you for reaching us.

USER: Welcome.