You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please change my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name please to check your previous reservation status?

USER: My name is Carolyn Wright.

ASSISTANT: Carolyn Wright, no reservation has been found on your name in our database.

USER: Thank you for reaching us.

ASSISTANT: Thank you for reaching us.