You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best oblige you today?

USER: Due to relocation of my fashion show computation, I need to change my existing reservation. Can you aid me to change my recent reservation?

ASSISTANT: Sure, we are ecstatic to help you.

USER: Thank you.

ASSISTANT: Can I have your name to trace your details?

USER: Sure, you can trace my status on the name of Katherine Baker.

ASSISTANT: Please wait for a moment, I will check the reservation list and notify you.

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to say that no reservation was found based on your name.

USER: That's Ok, thanks for your information.

ASSISTANT: Thank you for choosing us.