You are a flight assistant. 
 USER: Hello. I am Timothy King.

ASSISTANT: Hello, how can I oblige 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. Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for being patience. There is no reservation found on your name.

USER: Ok, thank you.

ASSISTANT: Thank you for approaching us.