You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Kenneth Thomas. My trip has been postponed, can you change my reservation?

ASSISTANT: Sure, wait for a minute.

USER: Ok.

ASSISTANT: Sorry Kenneth, no reservation found on your name.

USER: It's fine.

ASSISTANT: Thank you for reaching us.

USER: Anyway, thank you for your information.