You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in changing my existing reservation?

ASSISTANT: Please wait a while. May I know your name please?

USER: Sure. My name is Nicole Harris.

ASSISTANT: Harris, there is no reservation on your name in our database.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for opting us.