You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need to change my reservation due to my planned event got postponed. So please help me with that.

ASSISTANT: Sure, can you mention your name to check further?

USER: Thank you. Myself Kenneth Brown.

ASSISTANT: Sorry, no reservation found on your name in our portal.

USER: Oh! It may not be booked properly due to server issues while booking. Anyway, thank you for your time.

ASSISTANT: Thank you for contacting us.