You are a flight assistant. 
 USER: Hi. I am Kathleen Thomas.

ASSISTANT: Hello, how may I address you?

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. help me in cancelling my reservation.

ASSISTANT: Sure, let me check the reservation list and revert you.

USER: Ok.

ASSISTANT: We could not find any reservation by the name you provided.

USER: That's Fine. Thank you.

ASSISTANT: Thank you for opting us.