You are a flight assistant. 
 USER: Hello, I am Justin Garcia.

ASSISTANT: Hello. How may I be of your help today?

USER: Can you please book a flight ticket to New York, EWR as I want to celebrate my sister birthday?

ASSISTANT: Sure, do you need a lay by within your journey?

USER: Yes, there should be a lay by.

ASSISTANT: Kindly share your boarding airport code.

USER: Los Angeles, LAX is my source point.

ASSISTANT: Could you please let me know your planned travelling dates.

USER: My preferable dates of journey is 03/19 to 03/21.

ASSISTANT: Thanks for providing your journey details.. We found a Delta airline matching your essential details with the flight number-1005 and the price 300.

USER: You can book.

ASSISTANT: Ok, your booking has been confirmed.

USER: Thank you for assisting me.

ASSISTANT: Thanks you for approaching us.