You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

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

ASSISTANT: Sure, Please wait for few minutes.

USER: Sure.

ASSISTANT: There is no existing reservation found on your name in our records.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.