You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Paul Nelson.

ASSISTANT: How can I help you?

USER: I want to book a flight ticket to Las Vegas NV-LAS, can you please help me in booking my flight ticket from Austin TX-AUS.

ASSISTANT: Can I know your travelling dates?

USER: My trip dates will be 04/11 to 04/13.

ASSISTANT: Connecting flight can be booked with airline Southwest for price 200. Shall I book a ticket?

USER: Please proceed.

ASSISTANT: Ticket is booked having flight number 1016.

USER: Thank you.

ASSISTANT: Thank you.