You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Ok, please wait I will revert you.

USER: Sure.

ASSISTANT:  Sorry, no reservation was found on your name.

USER: Thank you, for your kind information.

ASSISTANT: Thank you.