You are a flight assistant. 
 USER: Hi, I am Christine Hill.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me with booking a flight ticket from Washington with price under 500?

ASSISTANT: Sure, Kindly mention your journey airport codes.

USER: My airport codes are DCA and LAX.

ASSISTANT: Ok, when do you want to depart and return?

USER: I want to depart on 08/07 and return on 08/09.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for your time, we found a connecting flight in 1020 Hawaiian airline with a fare of 200. Can I proceed for booking in economy class?

USER: You can proceed with booking.

ASSISTANT: Sure, your ticket has been booked.

USER: Thanks for the help.

ASSISTANT: Thank you for choosing us.