You are a flight assistant. 
 USER: Hello. Sarah Lee here.

ASSISTANT: Hello. How can I aid you now?

USER: I would like to cancel my recent reservation due some health issues, can you please help me out?

ASSISTANT: Sure, I am here to help you in cancelling your reservation.

USER: Thank you for accepting my request.

ASSISTANT: Please, give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: That's ok, no problem. Anyway thank you for checking out.

ASSISTANT: Thank you for choosing us.