You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to meet my cousin at Oakland, please help me in booking a ticket from AUS to OAK.

ASSISTANT: Let me know your travelling dates.

USER: My planned travel dates are on Mar 20 and Mar 22.

ASSISTANT: Do you have any preference?

USER: I prefer an economy class for my trip.

ASSISTANT: Let me know your name.

USER: My name is Carolyn Garcia. I prefer normal-cost airline.

ASSISTANT: Connecting flight can be booked with American airlines for price 100 having flight number 1000. Shall I book a ticket?

USER: Ok, please proceed for booking.

ASSISTANT: Ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you.