You are a flight assistant. 
 USER: Hello, my name is Brian Turner.

ASSISTANT: Hello. How can I assist you?

USER: My mom was sick so I need to go from DC-DCA on 12/17, could you please help me to book a ticket?

ASSISTANT: Sure, may I know your return journey details?

USER: Sure, my return journey on 12/19, and destination airport code is AZ-PHX.

ASSISTANT: The airline Southwest of flight number 1020 is available having price as 100 and connection as 1. Shall I proceed booking?

USER: Sure, you can proceed for booking.

ASSISTANT: Ok. Your ticket is booked.

USER: Thanks for booking.

ASSISTANT: Thank you.