You are a flight assistant. 
 USER: Hello, I am Ashley Gonzalez.

ASSISTANT: Hello, how may I guide you?

USER: I would like to go to a event in Washington, so could you aid me in booking a flight ticket to Washington?

ASSISTANT: Ok, can I know the airport codes of your mentioned locations?

USER: Sure, my source and destination airport codes are SEA and DCA respectively.

ASSISTANT: Ok, can I know your preferable dates?

USER: Sure, I would like to go on Sept 26th and return back on Sept 28th.

ASSISTANT: I found an economy class ticket in UA airlines with normal cost of 300 and it is a connecting flight. Can I book your ticket?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is booked with flight 1003.

USER: Thank you.

ASSISTANT: Thank you, have a good day.