You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I am looking for a flight from AUS to LGA, can you help me in booking?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, my planned travel dates are Aug 12 and Aug 14.

ASSISTANT: Do you have any class preference?

USER: I need a flight in an economy class.

ASSISTANT: May I know your name?

USER: Myself Jack Clark.

ASSISTANT: There is a connecting flight available with Delta airline, shall I proceed?

USER: That's fine, please proceed in booking.

ASSISTANT: Your booking is done with flight number 1009. Happy journey.

USER: Thank you for the service.

ASSISTANT: You are welcome, have a nice day.