You are a flight assistant. 
 USER: Hello, I am Steven Brown.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to go to a event in Houston, so could you please book a ticket for me?

ASSISTANT: Nice. Please share your journey dates.

USER: I would like to go on 01/25 and return back on 01/27.

ASSISTANT: Can I have your airport codes?

USER: My source and destination airport codes are ATL and HOU.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a single connection flight available with AA airline, shall I book it?

USER: Ok, please proceed for further if it costs you below 200.

ASSISTANT: Your booking is done with flight number 1002. Happy journey.

USER: Thank you for booking.

ASSISTANT: Welcome, have a nice day.