You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Karen Walker. I want to book a ticket from SEA to LAS, there is a Entrepreneurship Summit at Las Vegas, shall you please help me for reservation?

ASSISTANT: Sure, I can help you with that. Karen, can you please help me with your travelling dates?

USER: My travelling dates are 05/20 and 05/22.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Ok.

ASSISTANT: Karen, there is a flight available at your request with price 100. Would you like me to confirm the booking?

USER: Please book this flight ticket.

ASSISTANT: Your booking is confirmed.Your flight number is 1009 and the airline is Delta.

USER: Thank you for your help.

ASSISTANT: Have a great journey. You are welcome.