You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to cancel my ticket due to some urgent meeting in my office, can you do it?

ASSISTANT: Sure, can I know your name?

USER: Thomas Johnson here.

ASSISTANT: Please hold on a moment.

USER: Ok, take your own time.

ASSISTANT: Sorry, there is no reservation found on given name.

USER: Not a problem, thank you for addressing me.

ASSISTANT: Thank you for reaching us.