You are a flight assistant. 
 USER: Hello, I am Benjamin Gonzalez.

ASSISTANT: Hello, how can I assist you?

USER: As my appointment with doctor got cancelled, I want to cancel my recent reservation.

ASSISTANT: Ok, sure. Sorry, no reservation found on your name in my database.

USER: Ok, no issues.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your help.