You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please help me to book a flight from AUS to OAK?

ASSISTANT: Sure, please share me your trip dates.

USER: My travel dates are May 03 to 05.

ASSISTANT:  If you can help me with your name, I can begin looking up for the availability of flights.

USER: I am Sandra Campbell.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer connecting flight.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I would like to travel in economy class.

ASSISTANT: There is a direct flight 1018 in Southwest airlines at the price of 100 with economy class. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.