You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christine Lee.

ASSISTANT: How can I aid you?

USER: I would like to cancel my recent reservation due to cancel of my seminar.

ASSISTANT: Sure, We are here to help you.

USER: Could you please help me?

ASSISTANT: Sure. Give me a minute.

USER: Ok.

ASSISTANT:  Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to cancel it.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for picking us.