You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I assist you?

USER: Please help me to book a flight ticket from AUS to PHL.

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

USER: My journey dates are from May, 20 to May, 22.

ASSISTANT: Is there any class preference for you?

USER: No.

ASSISTANT: May I know your name please?

USER: Donald Rodriguez.

ASSISTANT: Do you have any other requirements?

USER: I need  a single connecting flight.

ASSISTANT: We are glad to inform you that there is a flight found with an United airline of flight 1028 in an economy class with lay by. Shall I proceed with the booking?

USER: Please proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.