You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I render 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, help me in cancelling my reservation.

ASSISTANT: Sure, I will help you with that.

USER: Thanks.

ASSISTANT: May I know your name to check your details in our database?

USER: My name is Anthony Carter.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.