You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I want to cancel my recent reservation due to cancellation of my interview.

ASSISTANT: Ok, may I know your name?

USER: Sure. Gregory Lewis is here.

ASSISTANT:  Ok, please wait I will revert you.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok.

ASSISTANT:  Thank you for availing us.

USER: Thank you for your information.