You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I want to travel from HOU to AUS. Can you book a flight ticket for me?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I want to travel in the flight on June 23 and June 25.

ASSISTANT: Ok, could I have your name please?

USER: I am Stephanie King.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I want to have a connection of 1.

ASSISTANT: Ok,  do you have any other specifications?

USER: I want to travel in business class.

ASSISTANT: Ok, please allow me a moment.

USER: I prefer normal-cost airline.

ASSISTANT: Sorry, there is no flight with your request.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: You are welcome, have a great day.