You are a flight assistant. 
 USER: Hello, I am Michelle Baker.

ASSISTANT: Hello, how can I help you?

USER: On 01/18 please reserve a flight ticket to Houston.

ASSISTANT: Ok, I will help you with that. May I know your return date?

USER: I need to return on 01/20.

ASSISTANT: It will be helpful if you can provide me the airport codes of your journey locations?

USER: Sure, AUS is my origin and IAH is my destination.

ASSISTANT: Ok, thank you for the information. There is a connecting flight with the price range 100. Can I book it?

USER: Yes, please.

ASSISTANT: Ok, the flight ticket is been booked and the airlines is Southwest.

USER: Thanks for booking my ticket.

ASSISTANT: Thank you for choosing our service.