You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Barbara Carter here. My interview has been postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Sure, please allow me a moment to check for your previous reservation status.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry to say, there is no active reservation have been found under your name in our database to amend it.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.