You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I want to cancel my recent reservation due to cancel of my seminar. Could you please help me?

ASSISTANT: Sure, may I know your name to check your reservation from our database?

USER: I am Benjamin Robinson.

ASSISTANT: Please wait.

USER: Sur.

ASSISTANT: We regret to inform you that there is no active reservation found on your name to cancel.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for contacting us.