You are a flight assistant. 
 USER: Hello. I am Betty Taylor.

ASSISTANT: Hello, how can I help you today?

USER: In Washington DC - DCA on 03/03, I have a meeting with my company board members. So, please book a ticket for me?

ASSISTANT: Sure, kindly mention your travel date?

USER: I need to return on 03/05.

ASSISTANT: May I know your source airport code?

USER: Philadelphia, PA - PHL is my source code.

ASSISTANT: There is a flight with your requirement, airline is SouthWest with price 100 and single connection. Shall I proceed with booking?

USER: Ok, please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

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