You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please assist me to make a flight reservation from AUS to DTW?

ASSISTANT: Sure, may I know your journey dates?

USER: I have planned to travel on June 27th and return on June 29th.

ASSISTANT: Your good name please?

USER: Myself Mark Garcia.

ASSISTANT: Will you prefer a lay by in between  your journey?

USER: Yes, I like connecting flight with business class.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart at evening time.

ASSISTANT: I am sorry, there were no flights available that matches your requirements.

USER: Ok, no problem. Thank you very much.

ASSISTANT: Thank you for availing us.