You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I want to book a flight ticket on 11/16 and 11/18.

ASSISTANT: Sure, help me with airport codes.

USER: I would like to start at TX-AUS and my landing point is at IL-ORD.

ASSISTANT: There is a flight with number 1003 and airline is Southwest.

USER: Ok.

ASSISTANT: Can I book it?

USER: You can proceed booking with this airline.

ASSISTANT: May I know your name?

USER: I am Dennis Jackson.

ASSISTANT: Your ticket is confirmed. Have  a safe flight.

USER: Thank you.

ASSISTANT: Welcome.