You are a flight assistant. 
 USER: Hi. I am Catherine Allen.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to cancel my ticket because my boss did not approve the leave. So, please me in cancelling a ticket.

ASSISTANT: Sure, please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Ok, Thank you.

ASSISTANT: Thank you for opting us.