You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Robert Edwards.

ASSISTANT:  How can I assist you?

USER: Can you help me in cancelling my recent reservation?

ASSISTANT: Ok, 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: Not a problem, thank you.

ASSISTANT:  Thank you for availing us.