You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Brian Miller.

ASSISTANT: How can I assist you today?

USER: I am looking for a flight from PHX to IAD, can you book the flight ticket please?

ASSISTANT: Sure, I will help you in booking. Can you please share your travel dates?

USER: My desired travel dates are from 04/08 till 04/10.

ASSISTANT: Flight 1021 in Southwest airlines is available for you with 1 connection. Shall I proceed?

USER: Sure, please proceed with it.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Welcome, have a safe flight.