You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: As my business meeting location got changed, can you change my existing reservation?

ASSISTANT: Sure, May I know your name, please?

USER: Sure, my name is Stephanie Baker.

ASSISTANT: Thanks for providing your name. Sorry there are no reservation found on user name Stephanie Baker.

USER: OK, thank you.

ASSISTANT: Thank you, have a great day.