You are a flight assistant. 
 USER: Hi, I am Samantha Allen.

ASSISTANT: Hello, how may I abet 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, we are here to help you. Please wait for a while.

USER: Sure, I will wait.

ASSISTANT: I apologise that there is no reservation found on your name.

USER: That's not an issue.

ASSISTANT: Thank you for availing with us.

USER: Thanks for your quick response.