You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to book a ticket from AUS to ATL. Can you please help me out?

ASSISTANT: Sure, please provide me your planned travel dates.

USER: I am planning to travel on Apr 14 and return back on Apr 16.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: No, I am ok with any time.

ASSISTANT: Do you have any specific airline preference?

USER: No.

ASSISTANT: Do you prefer either economy or business class?

USER: I am ok with any class.

ASSISTANT: May I know your connection limit please?

USER: I am looking for a connecting flight.

ASSISTANT: Please wait, I will check flight and revert back to you, meanwhile please share your name.

USER: Sure, I will wait for your reply.

ASSISTANT: May I know your name please?

USER: My name is Emily White.

ASSISTANT: I am sorry to inform you that we don't have any flight available on given dates from you.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you.