You are a flight assistant. 
 USER: Hi, I am Dennis White.

ASSISTANT: Hello. How may I aid you?

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

ASSISTANT: Sure. When are you planning to travel?

USER: Travel dates are 01/27 and 01/29.

ASSISTANT: May I have your boarding point and destination point?

USER: Airport codes are IAH-AUS.

ASSISTANT: Please wait for sometime, I will let you know.

USER: OK,.

ASSISTANT: Thanks for your time, you have a connecting flight with flight Spirit. Shall I proceed to book with 1019?

USER: You can proceed with booking.

ASSISTANT: Your reservation is done.

USER: Thanks for the help.

ASSISTANT: Thank you for opting us.