You are a flight assistant. 
 USER: Hi, I am Anna Johnson.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a flight ticket from Houston, TX-HOU to attend a robotic workshop in Los Angeles, CA-LAX, can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I would like to start on 05/02 and my return date will be on 05/04.

ASSISTANT: Do you need halt in between your journey?

USER: I need halt in between my journey.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a Southwest airline, flight number: 1021, price: 100 with one connection.

USER: That's fine, you can proceed with the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your kind service in booking.

ASSISTANT: Thank you.