You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you the day?

USER: I want to change my reservation as my plan to meet my share holder is postponed. Can you help me to change my reservation?

ASSISTANT: Sure, We are happy to help you.

USER: Thank you.

ASSISTANT: May I know your name to check the present status of your reservation?

USER: I am Amanda White.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Thanks for the time.

USER: Ok.

ASSISTANT: There is no active reservation on your name, to change your reservation.

USER: Thanks for your prompt service.

ASSISTANT: Thank you for making us to serve you.