You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to book a ticket from LGA to AUS, can you please help me out?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I am travelling on these dates Dec 20th and 22nd.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I need single connected flight.

ASSISTANT: Do you have any other requirements?

USER: I prefer business class.

ASSISTANT: May I know your name please?

USER: Raymond Moore here.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for opting us.