You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to visit Seattle to attend a live concert, please book a ticket from LAS to SEA.

ASSISTANT: Sure, may I know your journey dates please?

USER: My journey dates are 03/27 and 03/29.

ASSISTANT: Southwest airlines is having a flight with travel charge of 100, shall I proceed for booking?

USER: Ok, please book the ticket with the name Paul Lee.

ASSISTANT: Your ticket has been booked with flight-1004.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.