You are a flight assistant. 
 USER: Hello, I'm Katherine Anderson.

ASSISTANT: Hello, how may I help you?

USER: I would like to go to a church in Oakland, so could you please book a ticket?

ASSISTANT: Ok, please tell me your airport codes.

USER: My source and destination airport codes are AUS and OAK.

ASSISTANT: Can you please provide me your trip dates?

USER: I would like to travel on 01/05 and return back on 01/07.

ASSISTANT: Please wait for a while, let me check the availability for you. There is a flight-1017 found with your planning dates and the airline is UA.

USER: Ok, please proceed for further.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.