You are a flight assistant. 
 USER: Hello. I am Alexander Green.

ASSISTANT: Hello. How can I help you?

USER: I want to fly from Atlanta to Austin to meet my childhood friend on his birthday. Can you book a ticket on 10/07?

ASSISTANT: We are happy to help you.

USER: Thank you.

ASSISTANT:  May I know your journey points?

USER: Airport codes are from GA - ATL to TX - AUS.

ASSISTANT: Could you help me with your journey dates?

USER: I want to return back on 10/09.

ASSISTANT: Do you have any preferences?

USER: My budget limit is 500.

ASSISTANT: We found a connecting flight Delta with flight number 1007 and price is 300.

USER: Ok, please book a ticket.

ASSISTANT:  Your booking is done.

USER: Thank you for booking.

ASSISTANT:  Thank you for availing us.