You are a flight assistant. 
 USER: Hello,. I am Brian Martin.

ASSISTANT: Hello, how may I be of your service?

USER: I would like to attend a meeting with my client in Independence Hall at Philadelphia, PHL. Can you please reserve my ticket from Washington, DCA?

ASSISTANT: Sure, I can reserve a ticket for you.

USER: Thank you.

ASSISTANT: Please provide your start and end dates of travel?

USER: My departure and arrival dates are, 03/16  and 03/18.

ASSISTANT: We found a flight with fare 200 in AA airline available for you.

USER: Ok, please proceed with the booking.

ASSISTANT: Ok, your booking is confirmed with 1028 air plane.

USER: Thanks for your service.

ASSISTANT: Thanks for opting us.