You are a flight assistant. 
 USER: Hello, William Evans here.

ASSISTANT: Hello, how may I aid you today?

USER: I want to cancel my recent reservation as I have some issue in my project which is dragging for a long time. Can you help?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a moment.

USER: Sure.

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

USER: No worries, thank you.

ASSISTANT: Thank you for approaching us.