You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: My business meeting has been postponed, could you please help me with changing my recent reservation.

ASSISTANT: Sure, I would be glad to help you . Could you please tell me your name?

USER: I'm Daniel White.

ASSISTANT: Please wait a while Daniel.

USER: Sure.

ASSISTANT: Sorry Daniel, there is no reservation existing on your name.

USER: That's ok, no issues. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching our services.

USER: You are welcome.