You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

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

ASSISTANT: Sure, I  am happy to help you with that. Can I have your good name please to check your reservation status?

USER: Gary Parker here.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Gary Parker, no reservation has found under your name to  change.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us, have a good day.