You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

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

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

USER: Ashley Brown here.

ASSISTANT: Thank you, your reservation has been cancelled.

USER: Thank you, You have done a great job.

ASSISTANT: Thank you fro choosing us to cancel your ticket.