You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: Robert Mitchell here. My wedding has been postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Sure, I will help you with that. Please wait for a while.

USER: Sure.

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

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.