You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: The interview which I am planning to attend has been postponed. Can you please change my existing reservation?

ASSISTANT: Sure, may I know your name please?

USER: My name is Anna Lewis.

ASSISTANT: Please wait a moment. Anna, no reservation has been found on your name.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for choosing us.