You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Karen Lee here.

ASSISTANT: How can I help you today?

USER: I want to cancel my recent reservation due to some issues. Can you please help me in that?

ASSISTANT: Sure, I will help you to cancel your reservation.

USER: Thank you.

ASSISTANT: Please give me a moment to check your previous reservation.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: It's ok, no problem. Anyway thank you for the information.

ASSISTANT: Welcome, have a nice day.