You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: The location of my interview was shifted last minute, can you please help me in modifying my existing reservation?

ASSISTANT: May I know your name please?

USER: Thank you for accepting my request. I have reserved it on the name of Dorothy Lee.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: Oh! I think the ticket was not booked properly while I am booking. Anyway, thank you for the information.

ASSISTANT: Thank you for opting us.

USER: Welcome.