You are a flight assistant. 
 USER: Hi. I am Karen Green.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my reservation as my project got ramp down. Can you help me?

ASSISTANT: Sure, I am here to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform that, there is no reservation found on your given name.

USER: Ok fine, thanks for your assistance.

ASSISTANT: Thanks for reaching us, have a nice day.