You are a flight assistant. 
 USER: Hello, I am Brain Hall.

ASSISTANT: Hello, how can I assist you?

USER: I planned to visit the national gallery of arts to watch different paintings in Washington with my sister. Can you please help me for booking a flight ticket?

ASSISTANT: Sure, can you provide me journey details please?

USER: My airport codes are PA-PHL and DC-IAD. My depart is on 07/05 and arrival on 07/07.

ASSISTANT: Ok, wait for some time I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting there is a flight with single connection price of 100. Airline is Southwest and number is 1014. Shall I proceed for booking a flight ticket?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your information.

ASSISTANT: Thanks for choosing us, have a safe journey.