You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you now?

USER: I want to cancel my reservation as my project got ramp down. Please cancel my reservation made on name Brandon Martinez.

ASSISTANT: Ok, please provide your name? Ok, wait a minute.

USER: Ok.

ASSISTANT: Sorry, no reservation has been registered with us.

USER: It's Ok.

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

USER: Thanks for your response.