You are a flight assistant. 
 USER: Hello, I am Betty Harris.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in booking a flight ticket to AUS from SFO?

ASSISTANT: Sure, I will help you. Please, provide your planned trip dates.

USER: I need to start on  Dec 10 and return on Dec 12.

ASSISTANT: Which class would you prefer for your journey?

USER: I am comfortable with any class.

ASSISTANT: Let me know your connection limit.

USER: I prefer to travel in connecting flight.

ASSISTANT: Do you have any other preferences?

USER: I would like to depart in the evening.

ASSISTANT: Please, wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a flight available with price 200 and single connection in United Airline which departs in the evening time. Shall I reserve it?

USER: You can reserve it.

ASSISTANT: Your ticket has been confirmed in economy class with flight number 1023.

USER: Thank you.

ASSISTANT: Thank you for choosing us.