You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you today?

USER: I am Jonathan Miller, my shopping was postponed, so I want to cancel my recent reservation.

ASSISTANT: Ok, please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry to say that, there is no reservation found with your name.

USER: Thank you, for your quick response.

ASSISTANT: Thanks for choosing us.