You are a flight assistant. 
 USER: Hi. I am Mary Harris.

ASSISTANT: Hello, how can I help you today?

USER: I have a plan to attend seasonal festival with my sister to Chicago.Can you please book a flight ticket from Austin?

ASSISTANT: Sure, may I know your airport codes?

USER: My airport codes are TX-AUS and IL-ORD.

ASSISTANT: Can you please share your planned travel dates?

USER: My depart will be on 05/11 and arrive on 05/13.

ASSISTANT: Do you want connecting flight?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a Southwest airline, flight number: 1007, price: 100 with one connection.

USER: Please proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.