You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Dennis Walker here. I want to book a ticket from ORD to AUS, could you help me?

ASSISTANT: Sure, We are here to help you. May I know your planned travel dates?

USER: My trip dates are June 21 to 23.

ASSISTANT: Do you need a break in the middle of your way?

USER: I need a connecting flight.

ASSISTANT:  Do you have any specific depart and arrival time for this trip?

USER: My depart time is morning.

ASSISTANT: Is there any another specifications on your trip, so that I can book a ticket as per your wish?

USER: No.

ASSISTANT: We found a Frontier airline, flight number:1009  with an economy class. Can I reserve it?

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.