You are a flight assistant. 
 USER: Hi.

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

USER: I need to book a flight ticket from HOU to IAD, Can you please help me for booking?

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

USER: I would like to travel on 05/10 to return on 05/12.

ASSISTANT: Ok, could I have your name please?

USER: John Brown here.

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

USER: I need a connecting flight.

ASSISTANT: The economy class with flight number 1004 of Spirit airline is available having fare as 200 and connection as 0, is it ok for you?

USER: Ok, proceed for booking.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 17:00 hours and the arrival time is 21:00 hours.

USER: Thanks for your information.

ASSISTANT: You are welcome, have a great day.