You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please help me in booking from AUS to IAD?

ASSISTANT: Sure, let me know your trip dates please?

USER: My trip dates are from Feb 26 to Feb 28.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Are there any specific travel timings?

USER: I want to return in morning time.

ASSISTANT: Would you like any break in between your journey?

USER: I need a connecting flight.

ASSISTANT: Do you want to fly in economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: Ok, can you share your name please?

USER: My name is Karen Edwards.

ASSISTANT: Spirit Airlines has a connecting flight with number 1023 for fare 100, shall I proceed?

USER: Ok, proceed.

ASSISTANT: Your ticket is reserved in economy class with return time as 4:00 hours.

USER: Thank you.

ASSISTANT: Thank you for opting us.