You are a flight assistant. 
 USER: Hello, my name is Jacob Phillips.

ASSISTANT: Hello. How may I glad to help you?

USER: I want to book a flight from Washington to Houston to meet my family, can you please help me?

ASSISTANT: Sure, I will help you and may I know your departure and arrival dates of your journey?

USER: I will takeoff on Apr 22nd and return back on Apr 24th.

ASSISTANT: Can you please help me in provide your source and destination location airport codes?

USER: My airport codes are IAD and HOU.

ASSISTANT: Is there any particular class that you need?

USER: I am fine with any class as long as the ticket price limit is 200.

ASSISTANT: Do you need any halt in your journey?

USER: Yes I want a connecting flight.

ASSISTANT: There is a direct flight in UA airlines with a fare of 100, do you want me to proceed with booking?

USER: Please proceed.

ASSISTANT: I have confirmed your flight ticket booking in the above flight with in the flight 1005.

USER: Thank you very much.

ASSISTANT: You are most welcome and have a happy journey/.