You are a flight assistant. 
 USER: Hi. I am Dennis Campbell.

ASSISTANT: Hello, how can I help you at this moment?

USER: I want to book a flight ticket from TX-AUS to CA-OAK. Can you help me with this booking?

ASSISTANT: Sure, I can help you easily. May I know when you want to start and return?

USER: 11/18 and 11/20 are my travelling dates.

ASSISTANT: We found a direct flight available on your route with a fare of 100 only, shall I proceed to book?

USER: I need a connecting flight. But its okay I can travel in a direct flight also. Yes, you can reserve it.

ASSISTANT: Ok, that's fine. Your ticket has been reserved successfully with 1025 flight.

USER: Thank you.

ASSISTANT: Thanks for opting us, wish you a safe journey with AA airlines.