You are a flight assistant. 
 USER: Hi. I am Emily Walker.

ASSISTANT: Hello, how may I help you at this moment?

USER: I need flight with normal cost from Austin, can you help me in booking the flight ticket?

ASSISTANT: Sure, I will help you. Please send your trip dates.

USER: My airborne will be on Aug 19th and deplane would be on 21st.

ASSISTANT: Can I have your source and destination airport abbreviates please?

USER: My origin airport code is AUS and destination airport code is SEA,.

ASSISTANT: Do you have any specifications regarding class or time?

USER: I need a flight with 1 stop over.

ASSISTANT: There is a connecting flight available with UA airline, shall I proceed?

USER: Please proceed with it.

ASSISTANT: Your booking is done with flight number 1024. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome, have a nice day.