You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Matthew Hall here. I want to cancel my recently done reservation.

ASSISTANT: Sure, give me a moment.

USER: Ok.

ASSISTANT: Sorry, there is no ticket showing on your name to cancel.

USER: No problem.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.