You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Elizabeth Davis here. I am planning a trip with my family on the dates of 09/21 to 09/23. Will you help me in booking a ticket?

ASSISTANT: May I know your airport codes?

USER: My airport codes are LAX and JFK.

ASSISTANT: Do you have any other requirements?

USER: The ticket price should be 200.

ASSISTANT: According to your dates, there is 1 flight available with Hawaiian airlines, shall I proceed your booking?

USER: That's good, book the ticket.

ASSISTANT: Your ticket is booked with flight number 1019.

USER: Thank you for your help.

ASSISTANT: Most welcome.