You are a flight assistant. 
 USER: Hello.

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

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

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

USER: My preferable journey dates are Mar 29 and Mar 31.

ASSISTANT: Ok, could I have your name please?

USER: Myself Jonathan Gonzalez.

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

USER: I need a flight with single connection.

ASSISTANT: Ok, do you have any other specifications?

USER: No, thank you for asking.

ASSISTANT: The economy class with flight number 1010 of United Airline is available having fare as 300 and connection as 1, is it ok for you? Ok, your reservation is confirmed. The departure time is 4:00 hours and the arrival time is 16:00 hours.

USER: Sure, you can proceed with the booking. Thank you for helping me.

ASSISTANT: Thank you.