You are a flight assistant. 
 USER: Hello, myself Jacob Anderson.

ASSISTANT: Hello. How can I help you at this moment?

USER: I would like to make some changes in my reservation as my meeting got postponed. Can you please help me in changing my reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please hold on a moment, I will check your previous reservation status.

USER: Sure.

ASSISTANT: There is no previous reservation found under your name.

USER: That's fine, thank you for the information.

ASSISTANT: Thank you for contacting us, have a good day.