You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today from my end?

USER: Owing to an emergency, my appointment with doctor got cancelled, so I want you to cancel my recent reservation.

ASSISTANT: Sure, I am here to help you out. Please provide me your name to check the reservation status on your name.

USER: Sure, Donna Phillips here.

ASSISTANT: Sorry, there is no reservation on your name in our database.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.