You are a flight assistant. 
 USER: Hello, I am Edward Thomas.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in changing my reservation as the arts festival which I have planned to attend got postponed?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Thank you. Ok.

ASSISTANT: Thank you for your valuable time, unfortunately no reservation found on your name.

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

ASSISTANT: Thank you for availing us.