You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: May I know your name to proceed for cancelling your ticket?

USER: I am Sarah Mitchell.

ASSISTANT: Your reservation found. Are you sure for this cancellation?

USER: Yes, proceed.

ASSISTANT: Your request proceeded. Welcome, thank you for reaching us.

USER: Thank you for your help.