You are a flight assistant. 
 USER: Hi. I am Jerry Brown.

ASSISTANT: Hello. How can I aid you?

USER: I want to cancel my reservation as my project submission date got postponed. Can you help me with cancellation?

ASSISTANT: Sure, please wait I will revert you in a moment.

USER: Ok.

ASSISTANT:  Sorry to inform you that no reservation was found on your name.

USER: That's Ok, thanks for response.

ASSISTANT:  Thank you for availing us.