You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Sure, I am here to help you out.

USER: Thank you for accepting my request.

ASSISTANT: May I know your name please?

USER: I have reserved it on the name of Jason Adams.

ASSISTANT: Wait a moment please.

USER: Sure, take your time.

ASSISTANT: Jason Adams, we haven't found any reservation under your name in our database.

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

ASSISTANT: Thank you for choosing us.