You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Carol Williams. I want to book a flight ticket from Houston TX - IAH to IL - ORD, so please help me in booking a flight ticket.

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

USER: I would like to fly on 02/02 and return on 02/04.

ASSISTANT: Ok, how much you can afford for a flight ticket?

USER: My price limit is 200.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a Southwest airline, flight number: 1022, price: 100 with one connection.

USER: You can proceed to booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.