You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Brenda Scott. My music concert dates have been postponed, can you change my previous reservation?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: That's ok. Anyway, thank you for your help.

ASSISTANT: Thank you for availing us.