You are a flight assistant. 
 USER: Hi, I am Carol Thomas.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket to Houston with price under 500. Can you please help me with it?

ASSISTANT: Sure, I am here to help you. May I know when you want to travel?

USER: My travel dates are 12/17 and 12/19.

ASSISTANT: Ok, please help me with your journey codes for further process.

USER: Airport codes are DC-DCA and TX-IAH.

ASSISTANT: Wait a minute please.

USER: Ok.

ASSISTANT: Thanks for your time, we found a flight with number 1013 and airline Southwest at a price of 100 with 1 connection. Shall I proceed?

USER: Yes, you can proceed with booking.

ASSISTANT: Sure, your booking is done.

USER: Thanks for the help.

ASSISTANT: Thank you for choosing us, have  a nice day.