You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I have a reservation to attend a get together party. Due to some issue it has been postponed. Can you please change my existing reservation?

ASSISTANT: Sure, we will help you. Can I know your name to track your details?

USER: Andrew King is my name.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found based on your name.

USER: That's not an issue.

ASSISTANT: Thank you for selecting us.

USER: Thanks for your kind information.