You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I made a reservation earlier to attend for a seminar, due to some problems seminar has been postponed. Can you please make some modifications?

ASSISTANT: Sure, I am glad to help you.

USER: Thanks for accepting my request.

ASSISTANT: To proceed for further process, we need your name.

USER: Sure, John Miller is my name.

ASSISTANT: Thanks for your name, please wait.

USER: Sure.

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

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for availing us.