You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you now?

USER: I am Steven Collins. I want to cancel my recent reservation due to an emergency work.

ASSISTANT: Ok. I will help you with that, wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, we found  a reservation on your name. Shall I cancel it?

USER: You can cancel it.

ASSISTANT: Ok, your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for approaching us.