You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: I am Rachel King. Can you please cancel my recent reservation?

ASSISTANT: Sure, Thank you for providing your name. Please wait a moment, I will check the existing reservation and revert back to you.

USER: OK. I will.

ASSISTANT: Thanks for being patient. Sorry, Unfortunately I found no reservation existing with your specified name.

USER: OK, Thank you.

ASSISTANT: Thank you for contacting us, Have a nice day.