You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book a flight ticket to Washington, IAD with the name of Sarah Green?

ASSISTANT: Sure, kindly mention your travel dates.

USER: My journey dates are, depart on 02/11 and return back on 02/13.

ASSISTANT: Can you please provide me your source airport code?

USER: My source point is Austin, AUS.

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

USER: Ok, proceed with the booking.

ASSISTANT: Your booking is done and flight number is 1012.

USER: Thank you for your help.

ASSISTANT: Thanks for reaching us.