You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: Patricia Johnson here and I would like to attend a business meeting in Chicago, can you please help me out with booking of a flight ticket from LAX to ORD?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: Thank you for accepting my request, my departure is on Feb 17 and please book my return ticket also on Feb 19.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: May I know your departure time and arrival time?

USER: I would like to return at morning time.

ASSISTANT: Do you have any other requirements?

USER: I will prefer single connection for my journey.

ASSISTANT: There is a connecting flight in UA airlines with the fare 100.

USER: I am ok with this flight, you can proceed with booking now.

ASSISTANT: Your booking is done.

USER: Thank you for your kind assistance.

ASSISTANT: Thank you.

USER: Welcome.