You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ashley Walker.

ASSISTANT: How can I assist you today?

USER: I have to attend a client meeting in Oakland and my company is providing a ticket budget of 500, can you please help me in flight ticket booking?

ASSISTANT: Sure, I am glad to help you in booking the flight ticket.

USER: Thank you for accepting my request.

ASSISTANT: Can I know your travel airport codes?

USER: Sure, my travel dates are 10/20 and return back on 10/22.

ASSISTANT: Thank you for providing your travel dates, may I know your travel airport codes?

USER: It's alright and my preferable airport codes are from AUS to OAK.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I can wait for your response.

ASSISTANT: Thank you for waiting.

USER: That's fine.

ASSISTANT: Here, I found a connecting flight and airfare is about 100. Shall I proceed further in booking?

USER: I am ok with the flight that you have mentioned, please proceed with flight ticket booking.

ASSISTANT: Your ticket has been confirmed for the flight 1012 in AA airlines. Have a safe journey.

USER: I appreciate your quick help in my flight ticket booking, thank you so much.

ASSISTANT: Thank for availing our service.

USER: Most welcome.