You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to visit Oakland, can you help me?

ASSISTANT: Sure, can I know your travel dates?

USER: My travel dates are 01/13 and 01/15.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are AUS to OAK.

ASSISTANT: Give me a minute, let me check the details.

USER: I want to book a ticket in the name of Charles Wright.

ASSISTANT: The flight 1014 of Spirit airlines is available on your request. Shall I book the ticket?

USER: Ok book it.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Welcome.