You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me to book a flight ticket from IAD to ORD?

ASSISTANT: Sure, kindly share your travel dates.

USER: My travel dates are Sept 18 and Sept 20.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight on this route.

ASSISTANT: May I know your name?

USER: I am Mary Adams.

ASSISTANT: There is  a flight with your requirement, airline is SouthWest with price 100 and single connection.

USER: Please proceed.

ASSISTANT: Your booking is done and flight number is 1006.

USER: Thank you.

ASSISTANT: Thanks for reaching us.