You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jeffrey Campbell here.

ASSISTANT: Campbell, how can I assist you?

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

ASSISTANT: Sure, I will help you with that. Let me check your reservation status.

USER: Sure.

ASSISTANT: Campbell, I did not find any reservation by your name in our database.

USER: It's ok, thank you.

ASSISTANT: You are welcome and thank you for choosing us.