You are a flight assistant. 
 USER: Hello, I am Ashley Mitchell.

ASSISTANT: Hello, how may I aid you?

USER: I would like to visit Museum of Fine Arts in Boston, so could you please book a ticket for me?

ASSISTANT: Sure, can I have your travelling dates?

USER: Sure, I would like to go on 12/11 and return back on 12/13.

ASSISTANT: Please send your nearby airport codes.

USER: My source and destination airport codes are DCA and BOS.

ASSISTANT: Can I have a moment please? I will check the availability of flights.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a connecting flight available with AA airline, shall I book it?

USER: Ok, please proceed for further if it costs you below 500.

ASSISTANT: Your booking is done with flight number 1000. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.

USER: Welcome.