You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Donna Turner here. Could you help me in booking a ticket from PHL to AUS where I have an exam to attend.

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

USER: My travel dates are as follows July 19 and July 21.

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

USER: No, but I would prefer boarding a single connection flight.

ASSISTANT: Do you have any other specifications?

USER: No. thank you for asking.

ASSISTANT: We found American airline with economy class and flight number is 1022 with arrival time is 0.00 hours and departure time is 12.00 hours.Shall I proceed for booking?

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you very much for the assistance.

ASSISTANT: You are welcome.