You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I have made a booking to Seattle but the trip got changed to Austin, can you please help me in my flight ticket changing process?

ASSISTANT: Sure, please share your name to check current reservation status.

USER: Sure, my name is Helen Nelson.

ASSISTANT: Thank you, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, we don't have any reservation on your name to make changes.

USER: That's fine, I think it is not booked while I was booking. Thank you for checking my reservation status.

ASSISTANT: Thank you.

USER: Welcome.