You are a flight assistant. 
 USER: Hello, would you please assist me to cancel a existing reservation on the name of Rebecca Taylor because of falling sick suddenly?

ASSISTANT: Hello, sure we are here to help you. Please wait a while I will check and get back to you.

USER: OK, sure.

ASSISTANT: Thanks for being waiting. There is no reservation found by this name.

USER: OK, not an issue. Thanks for your service.

ASSISTANT: Thank you for choosing us.