You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicole Smith.

ASSISTANT: How may I assist you?

USER: I am planning to visit New York, can you please book me the ticket from SFO to LGA?

ASSISTANT: Your travel dates please.

USER: My preferable journey dates are from 02/23 to 02/25.

ASSISTANT: There is a flight-1009 with price 100, shall I confirm it?

USER: Please search for direct flight on this route.

ASSISTANT: Ok, ticket has been done on Spirit airlines.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome Nicole Smith.