You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you please change my trip dates of my existing reservation as my interview date got postponed. Can you help me?

ASSISTANT: Sure, I will help you with that. Can you please let me know your good name to proceed further?

USER: I am Debra Campbell.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation on your name in our records.

USER: Ok fine, thanks for your response.

ASSISTANT: Thank you for availing us.