You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Being an journalist, I want to go to library of congress to collect some newspapers which is helpful to me. So, help me in this flight ticket with 1 connection.

ASSISTANT: Sure, kindly provide me your travel dates?

USER: I will start on 02/18 to go to Washington. And I will return on 02/20.

ASSISTANT: May I know your airport codes?

USER: Source code : LAX. Destination code: DCA.

ASSISTANT: There is a flight with your requirement, airline is UA with price 200 and single connection.

USER: Ok.

ASSISTANT: Can I proceed with booking?

USER: Please proceed.

ASSISTANT: Your booking is done. May I know your name?

USER: Thank you. I am Jason Wright.

ASSISTANT: Thanks for reaching us, have a good day.

USER: Thank you for being helpful.