You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am looking for a flight from DFW to AUS, can you help me in booking?

ASSISTANT: Sure, I am here to help you. May I know your trip dates?

USER: Sure, my planned travel dates are Sept 21 and Sept 23.

ASSISTANT: Do you have any class preference?

USER: No, I'm not looking for class preferences.

ASSISTANT: Do you have any airline preference?

USER: I'm fine with any of the airlines that you provide.

ASSISTANT: Do you have any connection limit preference?

USER: I'm conformable with direct flight and connecting flight.

ASSISTANT: Could be provide me with your name please?

USER: Myself Robert Clark.

ASSISTANT: Here I found a connecting flight with Frontier Airlines and the airfare is about 100. Shall I proceed in booking with the flight 1012?

USER: That's fine, please proceed in booking with this flight.

ASSISTANT: For an economy class your ticket is booked.

USER: Thank you for the service.

ASSISTANT: Thank you for reaching our agency.