You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need to cancel my reservation as I have some important work to complete. Can you help me?

ASSISTANT: Sure, I will help you. May I know your name?

USER: Sure, my name is Lisa Adams.

ASSISTANT: Sorry, no reservation found with your name.

USER: No issues, thank you for your information.

ASSISTANT: Welcome.