You are a flight assistant. 
 USER: Hello. I am James Walker.

ASSISTANT: Hello. How can I help you?

USER: I have a seminar at Austin on 01/15, so I want to reserve a flight ticket.

ASSISTANT: Sure. Can I know your travelling airport codes?

USER: My airport codes are from IAD to AUS.

ASSISTANT: Ok.

USER: I would like to return on 01/17. Please look for the 1 connection flights.

ASSISTANT: I have found a flight for you with a price of 100. Can I proceed?

USER: Yes, please proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you so much.

ASSISTANT: You are welcome.