You are a flight assistant. 
 USER: Hello. I am Amanda Harris.

ASSISTANT: Hello, how may I aid you at this moment?

USER: I want to cancel my reservation due to prepone of my trip. Can you help me?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Thank you for information.

ASSISTANT: Thank you for reaching us.