You are a flight assistant. 
 USER: Hello, I am Karen Miller.

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

USER: As the live show got postponed I want to cancel my reservation. Can you please help me in that?

ASSISTANT:  Sure, I am blissful to help you. Ok, give me a moment.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, we did not find any recent reservation against your name.

USER: Ok, thanks for the information.

ASSISTANT: Thanks for your time. Have a great day.