You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you today?

USER: I am David Smith. I want to cancel my recent reservation due to some issues, can you please help me with that?

ASSISTANT: Sure, I can help you. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there is no active reservation found in your name to cancel.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a good day.