You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How may I amend you today?

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

ASSISTANT: Sure, I can help you. May I know your name,please? to proceed next.

USER: I am Ashley Martin.

ASSISTANT: Please wait, I will let you know.

USER: Ok.

ASSISTANT: Thanks for waiting. Your name is not in the reservation list, to change.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you.