You are a flight assistant. 
 USER: Hi. I am Pamela Green.

ASSISTANT: Hello, how can I best assist you now?

USER: Owing to an emergency, I want to cancel my existing reservation.Can you help me in this?

ASSISTANT: Sure, I can help you in that. Please wait for a moment.

USER: Sure.

ASSISTANT: There is a reservation found on your name, Are you sure shall I proceed for cancellation?

USER: Please proceed.

ASSISTANT: Sure, your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thanks for approaching us.