You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I amend you today?

USER: The invitation which I got to attend for talk festivity has been postponed, I want you to change my reservation. So, please help me to cancel the reservation with the name of Carol Young.

ASSISTANT: Sure, please wait.

USER: Ok.

ASSISTANT: Thanks for your time.

USER: It's Ok.

ASSISTANT: There is no reservation found on your name.

USER: Fine. Thank you for your quick response.

ASSISTANT: Thank you for availing us.