You are a flight assistant. 
 USER: Hello. I am Kimberly Parker.

ASSISTANT: Hello, how can I aid you Kimberly Parker?

USER: I want to cancel my reservation due to my trip got postponed.

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, we did not find any reservation based on your name.

USER: Ok, thanks for informing.

ASSISTANT: Thank you for reaching us.