You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Can you please change my recent reservation? As my planned trip has been postponed.

ASSISTANT: Sure, may I know the name to check for the status?

USER: Sure, my name is Kimberly Miller.

ASSISTANT: Sorry, there is no active reservation has been found under your name in our database to amend it.

USER: Oh! That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for reaching us.