You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need your help in booking a flight ticket.

ASSISTANT: May I know your airport codes?

USER: AUS and CLT are my in and out airport codes.

ASSISTANT: When your planning to go?

USER: September 25 and 27 are travelling dates.

ASSISTANT: Do you require any specifications?

USER: I prefer to depart in the afternoon.

ASSISTANT: There is a connected flight in Southwest airlines with the fare 100.

USER: Please ensure that it is a economy class flight.

ASSISTANT: Yes, its in economy class.

USER: Ok, please book the ticket.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: May I know your name.

USER: My name is Stephanie Scott.

ASSISTANT: Thank you.