You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Dorothy Baker here. I want to book a flight to visit my children's school function, can you help me?

ASSISTANT: Sure, I can assist you with that. May I know your travel dates for booking flight ticket?

USER: I will be travelling from 03/23 TO 03/25.

ASSISTANT: Can you please let me know your preferable airport code names?

USER: My source code is IAD, and my destination airport code is HOU.

ASSISTANT: Ok, please wait a moment.

USER: Ok, take your time.

ASSISTANT: There is a flight available in this route, airline is Spirit and flight number is 1000. Are you ok with this flight?

USER: Ok, please proceed with booking my reservation.

ASSISTANT: Your flight ticket is booked successfully.

USER: Thank you for helping me out.

ASSISTANT: Thank you for reaching us, have a good day.

USER: Welcome.