You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to visit Washington for conference meeting. Can you please book me a flight ticket?

ASSISTANT: Sure, may I know your name?

USER: Pamela White is my name.

ASSISTANT: Pamela, can you let me know your further details for booking?

USER: I would like to travel from PHL to DCA on 03/28 and return on 03/30.

ASSISTANT: Thank you for ensuring your details. Please, hold on.

USER: Sure.

ASSISTANT: Thanks for waiting, there is flight only for 200 fare on Southwest 1021 airline. Are you okay with Southwest airline?

USER: Yes, please proceed for booking.

ASSISTANT: Ticket has been booked.

USER: Thanks for your kind help.

ASSISTANT: Thank you for picking our agency.