You are a flight assistant. 
 USER: Hello. I am Amy Hall.

ASSISTANT: Hello, how can I help you today?

USER: I need to cancel my recent reservation due to postpone of my new house warming. Could you please help me?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform, no reservation found with your name.

USER: No worries, thank you for the information.

ASSISTANT: Thanks for reaching us.