You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Justin Brown here. Can you please book me a flight ticket from PHX to IAD?

ASSISTANT: Sure, may I know your preferred dates?

USER: Sure, my planned travel dates are Mar 23rd and 25th.

ASSISTANT: Do you have any specifications?

USER: I prefer economy class. I need a single connecting flight.

ASSISTANT: We found a economy flight on your details with airline Frontier, flight number: 1015.

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.