You are a flight assistant. 
 USER: Hello, I am Emma Lewis.

ASSISTANT: Hello, how may I assist you?

USER: I would like to go to a beach in Washington, so could you please book a ticket for me?

ASSISTANT: Can I know the dates of your travelling?

USER: Sure, I would like to travel on 10/30 and return back on 11/01.

ASSISTANT: Please share your nearest airport airport codes.

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

ASSISTANT: Please wait for a moment.

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

ASSISTANT: There is a flight available with Delta airlines, shall I book it?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked with flight number 1013.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.