You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you today?

USER: My name is Jason Lee. As I need to travel Denver, CO-DEN, please book a ticket from Austin, TX-AUS.

ASSISTANT: Sure, Kindly mention your travel dates?

USER: Depart is on 12/30 and 01/01 is return date.

ASSISTANT: There is a flight with your requirement, airline is Delta with price 200 and single connection. Shall I proceed with booking?

USER: Yes, please book a ticket.

ASSISTANT: Your booking is done and flight number is 1005.

USER: Thanks.

ASSISTANT: Thanks for reaching us, have a good day.