You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Margaret Roberts and I want to cancel my recent reservation due to my client meeting got cancelled. Can you help me with it?

ASSISTANT: Ok, please wait a moment. I will check and get back to you.

USER: Sure.

ASSISTANT: Thank you for your time. Unfortunately there is no reservation found with your name.

USER: Ok, not a problem. Thanks for your help.

ASSISTANT: Thank you and have a nice day.