You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How exactly can I provide assistance to you?

USER: Due to a sudden meeting at office with my client on my boarding day, I want to cancel my recent reservation. Can you help me with cancellation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name, to check your reservation status?

USER: Kathleen Walker is my name.

ASSISTANT: Ok, Please wait.

USER: Sure.

ASSISTANT: Sorry Kathleen, there is no active reservation on your name to cancel it.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for your presence.