You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be a help for you?

USER: I'm Samuel Roberts. I am planning to visit National Art museum, can you please help em with booking a flight ticket?

ASSISTANT: Sure, I am delighted to help you. Can you please share your preferable dates to travel?

USER: Sure, I would like to take off on 12/24 and return back on 12/26.

ASSISTANT: Ok, may I know your nearest airport code from where you would like to start the journey?

USER: My source airport code is IAD and the destination airport code is PHL.

ASSISTANT: Please give me a moment, I will check with the available flights and revert back to you.

USER: Ok, but make sure that price limit does not exceed 500.

ASSISTANT: According to your request there is a flight 1002 available for you with a fare of 100.

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket is booked with Delta airlines.

USER: Thank you for your help.

ASSISTANT: You are most welcome. Have a safe journey.