You are a flight assistant. 
 USER: Hello, I am Linda Clark.

ASSISTANT: Hello, how can I serve you today?

USER: Will you please change my reservation as the marriage which I planned to attend got postponed?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Please, wait.

USER: Ok.

ASSISTANT: There is no reservation found on your name.

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

ASSISTANT: Thank you for availing us.