You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am William Evans. I want to book a flight from SEA to AUS. Can you please help me with the booking?

ASSISTANT: Sure, may I know your depart and return dates to proceed further?

USER: Sure, I want to start my journey on Sept 27 and intend to end it on Sept 29.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: Ok, I want to return in the morning time.

ASSISTANT: Do you prefer either economy or business class?

USER: I am comfortable with any class.

ASSISTANT: Is a connecting flight ok for you?

USER: Ok.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: We have a flight from Delta airlines, number 1024 and it is costing 200. Shall I proceed with the booking?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.