You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm David Perez.

ASSISTANT: How can I assist you today David Perez.

USER: My business meeting has been cancelled. So, I would like to cancel my reservation which is under my name. Can you please help me with that?

ASSISTANT: Ok, let me check with your previous booking. I'm so sorry to tell you, no reservation was found by your name.

USER: Ok, no issues.

ASSISTANT: Thanks for reaching us, have a great afternoon.

USER: Thank you for checking.

ASSISTANT: You are most welcome.