You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: As I heard Washington is a nice place to visit, I would like to book a flight ticket. Could you please help me out?

ASSISTANT: Yes, can I know the dates of travel?

USER: My departure day will be on 03/27 and my return day will be on 03/29.

ASSISTANT: Can I know the airport codes?

USER: The airport codes are PHX and DCA.

ASSISTANT: Flight 1027 of Delta airlines matches with your preferences. Can I book the ticket?

USER: Yes, please book the ticket.

ASSISTANT: Your ticket is booked. Can I know your name?

USER: My name is Jason Martinez.

ASSISTANT: Thank you, have a safe flight.

USER: Thank you for your time.