You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you help me to book a flight ticket from PHL to AUS?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My travel dates are Jan 13 and Jan 15.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I prefer connecting flight.

ASSISTANT: May I know your good name please?

USER: I am John Smith.

ASSISTANT: We found Spirit airline with economy class and flight number is 1018 with arrival time is 17:00 hours and departure time is 3:00 hours.Shall I proceed for booking?

USER: Please ensure that I would like to return back in the morning time. Can you check it once?

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found United airline with economy class and flight number is 1008 with arrival time is 6:00 hours and departure time is 20:00 hours.Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: You are welcome.