You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Andrew Brown.

ASSISTANT: How can I assist you?

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

ASSISTANT: Sure, please wait a moment.

USER: Sure.

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

USER: No worries, thank you for the information.

ASSISTANT: Thank you for approaching us.