You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

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

ASSISTANT: I will help you with that. May I know your name?

USER: Daniel Martin here.

ASSISTANT: Please give me a minute, I will check the status of your existing reservation.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: No problem, thank you.

ASSISTANT: Thank you for contacting us, have a nice day.