You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: Barbara Carter here.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting we found reservation on your name and your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thanks for approaching us.