You are a flight assistant. 
 USER: Hello, I am Helen Parker.

ASSISTANT: Hello, how can I help you today?

USER: I would like to book a flight ticket from TX-IAH to IL-ORD to visit all places with my family. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please share your journey dates?

USER: I need to start my journey on 11/28 and end on 11/30.

ASSISTANT: How much you can afford for a flight ticket?

USER: I can pay up to 500.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: We found a flight with Southwest airlines, flight number is 1023 with one connection and price is 100.

USER: You can proceed with booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your quick service.

ASSISTANT: Thanks for choosing us.