You are a flight assistant. 
 USER: Hi, I am Justin Walker.

ASSISTANT: Hello, how may I assist you today?

USER: I need to visit to Las Vegas NV - LAS on the occasion of my nephew's birthday party. Can you help me with reservation?

ASSISTANT: Sure, may I know your origin and travelling days?

USER: Sure, my preferable dates are 11/17 and 11/19. And my departure airport code is NY - EWR.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We have found a flight 1000 in Delta airlines and price is 100 with single connection. Shall I proceed for booking?

USER: Yes, you can.

ASSISTANT: Thank you for contacting us, your ticket has been confirmed.

USER: Thanks for your service.