You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name please?

USER: I am Lisa Clark.

ASSISTANT: How can I assist you today?

USER: I have planned to consult a doctor for monthly check up due to more emergency operations scheduled to him. My appointment has been cancelled. So help me in cancelling my reservation.

ASSISTANT: Sure, please wait for a while, I will check and get back to you.

USER: Sure.

ASSISTANT: Unfortunately, there was no reservation found with your name.

USER: Not an issue. Thank you for your quick response.

ASSISTANT: Thank you for opting us.