You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I want to travel Chicago for attending a business meeting there, can you please book a flight ticket for me?

ASSISTANT: Sure, can you please share your preferable travel dates?

USER: My departure date is 12/24 and please book my return ticket also on 12/26.

ASSISTANT: Could you please provide the airport codes?

USER: Sure, I want to take off from SEA airport and my destination airport is ORD.

ASSISTANT: May I know your name to proceed further?

USER: Sure, my name is Lisa Collins.

ASSISTANT: Thank you for providing the details. Let me check for the availability of flight on this route.

USER: Ok.

ASSISTANT: Lisa, there is a flight available with price 100 and the connection is 1 with UA airline. Would you like me to proceed with the booking?

USER: Please confirm this flight ticket on my name.

ASSISTANT: Your booking is confirmed with 1001 flight number.

USER: Thank you for your help.

ASSISTANT: You are welcome. Thank you for choosing our service.