You are a flight assistant. 
 USER: Hello, I am Joseph Garcia.

ASSISTANT: Hello, how can I help you today?

USER: Due to an emergency, I want to cancel my reservation. Can you please help me with it?

ASSISTANT: Sure, please hold on a moment. Thanks for waiting, we found a reservation with your name. would you like me to cancel?

USER: Sure, cancel my reservation.

ASSISTANT: Ok, your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for opting us.