You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you at this moment?

USER: Due to an emergency, I want to cancel my flight that I have to do a surgery on the same day, please cancel my ticket.

ASSISTANT: Sure, I will assist you about that. Can you please help me by providing your name for checking existing reservation under your name?

USER: Thank you for assisting in that one and my name is Stephen Scott.

ASSISTANT: Sorry, after checking our data base I have not found any active reservations under your name Scott.

USER: No problem with that one, thanks for your search and help.

ASSISTANT: Thank you for using our service. Hope you have a nice day.