You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sharon Miller. I would like to cancel my existing flight reservation. Could you please help me out?

ASSISTANT: How may I help you? Please wait for a moment.

USER: Please take your time.

ASSISTANT: Sorry, there is no reservation found basis on your details.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.