You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Please book a flight ticket from OAK to AUS.

ASSISTANT: I am here to help you with your concern. Sure, can you please let me know your trip dates?

USER: My trip dates are 08/12 and 08/14.

ASSISTANT: Would you like to fly with connecting flight or direct flight?

USER: I am comfortable to travel in a single connecting flight.

ASSISTANT: Are you comfortable with economy class flight or business class flight?

USER: I am fine with any class.

ASSISTANT: Do you have any specific time concern?

USER: No.

ASSISTANT: Could you help me with your name please? So, I can check for the flights availability.

USER: Richard Smith here.

ASSISTANT:  There is a flight available for the mentioned and also which match your needs, Spirit Airlines is having a connecting flight with 1017 flight number and airfare is 200. Are you comfortable with this flight?

USER: Yes, proceed for booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.