You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Timothy Scott. I would like to book a flight ticket from PHX to IAD.

ASSISTANT: Sure, can I know your preferable dates?

USER: I am planning to travel from 10/20 and return back 10/22.

ASSISTANT: I found a flight 1001 of Southwest airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Your ticket is confirmed.

ASSISTANT: Thank you, have a good day.

USER: Thank you.