You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me in changing my recent reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Sure, please mention your name for checking the reservation status.

USER: Thank you for accepting my request, I have reserved it on the name of Justin Perez.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: There is no reservation found under your name.

USER: Oh! I think the ticket was not booked due to server issue. Anyway, thank you for checking.

ASSISTANT: Welcome, have a great day.