You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket to celebrate my birthday with my friends who is staying in Fort Worth, TX-DFW.

ASSISTANT: Sure, may I know your further details to proceed?

USER: I would like to travel from Boston, MA-BOS on 11/25 and return on 11/27.

ASSISTANT: Ok, can I have your name to proceed?

USER: My name is Dorothy Jones.

ASSISTANT: Ok, thanks for providing details, please wait for a while, let me check and let you know.

USER: Sure.

ASSISTANT: Sorry, unfortunately no flights found on that day.

USER: Not a problem, thank you.

ASSISTANT: Pleasure to serve you, have a nice day.