You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, can you please help me with your name to proceed?

USER: Sure, my name is Elizabeth Green.

ASSISTANT: I have cancelled your ticket.

USER: Thank you for your service.

ASSISTANT: Welcome.