You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Christine Thomas. I need to book a flight ticket from DC-IAD to TX-AUS.

ASSISTANT: Ok.

USER: Could you please help me with booking a flight ticket on 05/12?

ASSISTANT: Sure.

USER: I intend to return on 05/14.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight available with Spirit airline, flight number 1013 with fare 100 and a lay by.

USER: You can proceed with booking.

ASSISTANT: Your booking has been done.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.