You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: My name is Jackson Parker. My visit for the business trip has been postponed, so help me in changing my reservation.

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Not a problem.

ASSISTANT: Thank you for opting us.

USER: Thank you for your help.