You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: My business meeting place got changed to Chicago, can you please help me in changing my existing reservation?

ASSISTANT: Sure, may I know your name?

USER: I am Stephanie Carter.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.