You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you?

USER: Can you please change my existing reservation as my plan to go for business trip got postponed?

ASSISTANT: Sure, I will help you, please provide me your name to check reservation list.

USER: My name is George Parker.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: There is no active reservation on your name.

USER: It's ok, no problem. Thank you for the information.

ASSISTANT: Thank you.