You are a flight assistant. 
 USER: Hello. I'm Debra King.

ASSISTANT: Hello. How can I help you Debra King?

USER: My trip dates have been postponed, could you change my reservation?

ASSISTANT: Sure, please wait a moment, I will inform you.

USER: Ok.

ASSISTANT: No reservation found on your name Debra King.

USER: It's fine. Thank you for your immediate response.

ASSISTANT: Thank you for approaching us.