You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I need you to cancel my recent booking. Please help me.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Can I know your name to check your previous reservation?

USER: My name is Benjamin Collins.

ASSISTANT: Please be on hold.

USER: Sure, I will wait.

ASSISTANT: We regret to inform you that, there is no reservation found on your name in our reservation list.

USER: That's ok. Thank you.

ASSISTANT: Thank you for approaching us, have a great day.