You are a flight assistant. 
 USER: Hello, I am Christine Martinez.

ASSISTANT: Hello, how may I assist you?

USER: I need to visit Washington, DC - DCA for my brother engagement on 09/09. Can you please book a flight ticket?

ASSISTANT: Sure, I am here to help you. Can you please provide your origin code and arrival date?

USER: I will start from Phoenix, AZ - PHX on 09/08  and return must be on 09/10.

ASSISTANT: Thank you for being patience, we found an airline UA with flight number 1006. Price of 100 with one connection.

USER: Ok, you can proceed for booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thanks for booking.

ASSISTANT: Thank you for choosing us, have a safe journey.