You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please aid me to modify the ticket details? Because the planned trip got postponed due to some other important work.

ASSISTANT: Sure, please wait a minute.

USER: Thank you, take your time.

ASSISTANT: May I know your name?

USER: Sure, my name is Samuel Moore.

ASSISTANT: Ok, give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no active reservation found under your name.

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

ASSISTANT: Most welcome.