You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Brenda Brown. As my interview got postponed, Can you please change my reservation?

ASSISTANT: Sure, we can help you. Please give me a moment to check your details and let you know.

USER: Sure.

ASSISTANT: Sorry for the inconvenience, there is no reservation found on your name to change.

USER: No problem.

ASSISTANT: Thank you for consulting us.

USER: Thank you.