You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am James Baker.

ASSISTANT: How can I assist you at this moment?

USER: As my meeting got postponed, can you please help me by changing my existing reservation?

ASSISTANT: Sure James Baker, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait a moment to check your reservation status.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry James Baker, no reservation has found under your name to change.

USER: Ok, not an issue. Thank you for providing information.

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