You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Helen Green. I want to cancel my reservation as my meeting has got cancelled, can you please help me that?

ASSISTANT: Sure, I am here to help you. Please stand by I will get back to you.

USER: Ok.

ASSISTANT: Thank you for waiting. We found a reservation on your name.

USER: Ok. Please cancel it.

ASSISTANT: Sure, your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for choosing us, have a nice day.