You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you at this moment?

USER: I am planning to visit Los Angeles city, can you please book me a ticket from DFW to LAX?

ASSISTANT: Yes, I am glad to assist you. Can you please let me know your dates of journey?

USER: My preferable journey dates are from 04/04 to 04/06.

ASSISTANT: Please, provide your name for further process.

USER: My name is Nancy Walker.

ASSISTANT: JetBlue airline is providing a flight 1000 having a fare of 100. Shall I proceed for the booking?

USER: Please book my ticket with this flight.

ASSISTANT: Your flight ticket has been confirmed with flight 1000.

USER: Thank you for booking my ticket.

ASSISTANT: Most welcome. Have a safe journey.