You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

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

USER: My name is Jason Davis.

ASSISTANT: Ok, wait for a minute please.

USER: Sure.

ASSISTANT: Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to change it.

USER: No problem, thank you.

ASSISTANT: Thank you.