You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you today?

USER: I am Alexander Lee. I want to cancel my recent reservation due to some health issues. Can you please aid me with this?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

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

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.