You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

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

ASSISTANT: Sure, I am here to help you. Please hold on.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation found  on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for availing us, hope to serve you again.