You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Will you help me in changing my reservation as my plan to attend a seminar got delayed due to some issues?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name to check the reservation status?

USER: I am Benjamin Wright.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for being on hold. Sorry we couldn't find any reservation on your name.

USER: It's ok, Thank you for the information.