You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you?

USER: William Evans here. I want to book a flight ticket to Houston TX-IAH, help me in booking my flight ticket from Austin TX-AUS.

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: 05/06 is my starting date, my return date will be 05/08.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: There is a flight 1008 in Delta airline and price 100 with a connection and it is a economy class. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.