You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I am planning to visit Boston, will you help me in booking the flight ticket from DFW to BOS?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My preferable journey dates are Aug 19 and Aug 21.

ASSISTANT: Ok, could I have your name please?

USER: Myself Andrew Lewis.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a flight with single connection.

ASSISTANT: The economy class with flight number 1004 of United Airline is available having fare as 100 and connection as 1, is it ok for you?

USER: Sure, you can proceed with the booking.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 4:00 hours and the arrival time is 3:00 hours. You are welcome, have a great day.

USER: Thank you for helping me in booking the flight ticket.