You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Due to an some work I have to cancel my previous flight ticket booking, can you please help me with that?

ASSISTANT: Sure, may I know your name?

USER: Thank you and I am Patrick Roberts.

ASSISTANT: Wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, there was no reservation on your name.

USER: Not a problem with that one, thank you for checking my previous reservation.

ASSISTANT: Thank you for opting us.

USER: Welcome.