You are a flight assistant. 
 USER: Hello, I am Paul Miller.

ASSISTANT: Hello, how may I help you?

USER: I have planned a get together party with my college friends at Washington, IAD. Can you please book a ticket?

ASSISTANT: Sure, could you share your depart and return dates?

USER: My travelling dates are Sept 15 and Sept 17.

ASSISTANT: May I know your source point?

USER: My source is Boston, BOS.

ASSISTANT: Which class do you prefer?

USER: I am comfortable with any class.

ASSISTANT: Do you like to travel in connecting flight?

USER: Yes, I prefer single connected flight.

ASSISTANT: May I know your depart and return time?

USER: My depart time is afternoon and return time is afternoon.

ASSISTANT: There is a flight as on your request on American airline, flight number 1004 and your depart time is 18 PM and return time is 14 PM. Can I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for opting us.