You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation do to cancel of my seminar.

ASSISTANT: Sure, kindly share your name.

USER: I am Karen Martinez.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: No worries, thank you for the information.

ASSISTANT: Thanks for reaching us.