You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Karen Jackson. I want to book a flight ticket from TX - IAH to TX - DFW. Could you please help me in booking a flight ticket?

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

USER: My travel dates are from 01/12 to 01/14.

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

USER: I can afford up to 5000.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found a AA airline, flight number: 1028, price: 100 with one connection.

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you, have a good day.