You are a flight assistant. 
 USER: Hello. I am Patrick Nelson here.

ASSISTANT: Hello, how may I help you?

USER: I am looking for a flight from AUS to DEN. Can you please help me with booking  a flight ticket?

ASSISTANT: Sure, can I know your travelling dates?

USER: My planned travel dates are from Apr 28 to Apr 30.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I would like to return in the afternoon time.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I need a connecting flight in my journey.

ASSISTANT: Which class do you prefer? We found Spirit airline with price 200 and economy class and airline number is 1011 with arrival time is 13 PM and departure time is 23 PM, Shall I proceed for booking?

USER: Yes, please proceed with that booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help in booking my ticket.

ASSISTANT: Thank you.