You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Matthew Lewis.

ASSISTANT: How can I provide assistance to you?

USER:  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 assist you. Please hold on.

USER: Thank you. Sure.

ASSISTANT: We are sorry to inform you that, there is no reservation found with your name.

USER: Ok, thanks for informing.

ASSISTANT: Thanks for availing us, we hope to serve you again.