You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what service are you looking for?

USER: I need to modify the destination location because the meeting which is held at San Francisco was changed to Austin city. Can you please help me to change the details?

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

USER: Thank you for accepting my request. My name is Michelle Smith.

ASSISTANT: Sorry, we don't see any reservation on your name to change.

USER: It's ok, not a problem. I think the ticket is not reserved properly. Thank you for your time.

ASSISTANT: Thank you.

USER: You are welcome.