You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: This is Kathleen Miller.

ASSISTANT: How can I help you?

USER:  I have reserved a ticket for an client meeting, but I got a sudden call from my friend that one of my friend got met with an accident. So, I want to cancel my reservation. Can you help me?

ASSISTANT:  Ok, please wait I will revert you in a moment.

USER: Sure, make it as soon as possible.

ASSISTANT:  Sorry to inform you that no reservation was found on your name in our data base.

USER: That's ok, not an issue. Thanks for your effort.

ASSISTANT:  Thank you for availing us.