You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Karen Harris here. I need you to cancel my recent booking.

ASSISTANT: Sure, we are here to help you.

USER: Good to hear that.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.